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Class 11 Biotechnology - Processes Of Recombinant Dna Technology - Cutting of DNA Easy Quiz

Level 43 • 48/50 questions • 40 seconds per question.

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Genomic DNA isolation में किस चीज को अधिक intact रखना जरूरी हो सकता है?

In genomic DNA isolation what may need to be kept more intact?

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A. लंबा chromosomal DNALong chromosomal DNA

Explanation

Simple Explanation

Genomic DNA लंबा होता है और rough handling से टूट सकता है। Gentle handling important है। / Genomic DNA is long and can break by rough handling. Gentle handling is important.

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Plasmid DNA isolation में target DNA कैसा होता है?

What is the target DNA in plasmid DNA isolation?

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B. small circular extra-chromosomal DNA

Explanation

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Plasmid DNA छोटा circular extra-chromosomal DNA होता है। Plasmid prep का लक्ष्य इसी को अलग करना है। / Plasmid DNA is small circular extra-chromosomal DNA. Plasmid prep aims to isolate it.

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Alkaline lysis method किस DNA isolation से अधिक जुड़ा है?

Alkaline lysis method is more linked with which DNA isolation?

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C. bacterial plasmid DNA

Explanation

Simple Explanation

Alkaline lysis bacterial plasmid DNA preparation में common है। इसमें plasmid और chromosomal DNA अलग किए जाते हैं। / Alkaline lysis is common in bacterial plasmid DNA preparation. It separates plasmid and chromosomal DNA.

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Alkaline lysis में बहुत जोर से mixing क्यों avoid की जाती है?

Why is very harsh mixing avoided in alkaline lysis?

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D. chromosomal DNA contamination कम रखने के लिएTo keep chromosomal DNA contamination low

Explanation

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Harsh mixing genomic DNA को shear करके solution में ला सकती है। Gentle inversion बेहतर होता है। / Harsh mixing can shear genomic DNA and bring it into solution. Gentle inversion is better.

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Plasmid prep में supernatant में सामान्यतः क्या recover किया जाता है?

In plasmid prep what is commonly recovered in the supernatant?

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B. plasmid DNA

Explanation

Simple Explanation

Alkaline lysis के बाद cleared supernatant में plasmid DNA हो सकता है। Protocol के अनुसार इसे आगे purify करते हैं। / After alkaline lysis the cleared supernatant can contain plasmid DNA. It is further purified according to protocol.

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Phenol-chloroform extraction में DNA किस phase में रह सकता है?

In phenol-chloroform extraction in which phase can DNA remain?

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D. aqueous phase

Explanation

Simple Explanation

DNA सामान्यतः aqueous phase में रहता है। Proteins organic phase या interface में जा सकते हैं। / DNA usually remains in the aqueous phase. Proteins can move to the organic phase or interface.

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Organic phase में मुख्यतः क्या जा सकता है?

What can mainly move into the organic phase?

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A. proteins और hydrophobic impuritiesProteins and hydrophobic impurities

Explanation

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Organic extraction में proteins organic phase या interface में जा सकते हैं। DNA aqueous layer में बच सकता है। / In organic extraction proteins can move into organic phase or interface. DNA can remain in the aqueous layer.

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Interface contamination से DNA sample में क्या समस्या हो सकती है?

What problem can interface contamination cause in a DNA sample?

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B. protein और debris contaminationProtein and debris contamination

Explanation

Simple Explanation

Interface accidentally लेने पर proteins और debris आ सकते हैं। इससे DNA purity घटती है। / Accidentally taking the interface can bring proteins and debris. This reduces DNA purity.

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Plant DNA isolation में polyphenols क्या समस्या कर सकते हैं?

What problem can polyphenols cause in plant DNA isolation?

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C. DNA के साथ co-purify होकर reactions inhibit कर सकते हैंThey can co-purify with DNA and inhibit reactions

Explanation

Simple Explanation

Polyphenols plant DNA sample में impurities बन सकते हैं। इसलिए plant protocols में इन्हें हटाने की कोशिश होती है। / Polyphenols can become impurities in plant DNA samples. Therefore plant protocols try to remove them.

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Plant DNA sample में polysaccharides क्यों परेशानी देते हैं?

Why do polysaccharides create difficulty in plant DNA samples?

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D. वे sample को viscous बनाकर reactions रोक सकते हैंThey can make sample viscous and inhibit reactions

Explanation

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Polysaccharides DNA के साथ co-precipitate हो सकते हैं। CTAB method इन्हें घटाने में help करता है। / Polysaccharides can co-precipitate with DNA. CTAB method helps reduce them.

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CTAB method किस sample type में खास उपयोगी है?

CTAB method is especially useful for which sample type?

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A. plant samples with polysaccharides

Explanation

Simple Explanation

CTAB plant tissues में polysaccharides और कुछ secondary compounds हटाने में मदद करता है। यह plant DNA isolation में common है। / CTAB helps remove polysaccharides and some secondary compounds from plant tissues. It is common in plant DNA isolation.

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DNA extraction में beta-mercaptoethanol plant samples में क्यों use हो सकता है?

Why can beta-mercaptoethanol be used in plant samples during DNA extraction?

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B. oxidation और polyphenol effect घटाने मेंTo reduce oxidation and polyphenol effect

Explanation

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यह reducing agent की तरह polyphenol oxidation कम करने में मदद कर सकता है। Plant DNA purity में यह useful हो सकता है। / It can help reduce polyphenol oxidation as a reducing agent. It can be useful for plant DNA purity.

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DNA shearing किससे हो सकती है?

What can cause DNA shearing?

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C. harsh vortexing और rough pipettingHarsh vortexing and rough pipetting

Explanation

Simple Explanation

Mechanical stress long genomic DNA को तोड़ सकता है। इसलिए gentle handling जरूरी है। / Mechanical stress can break long genomic DNA. Therefore gentle handling is necessary.

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High molecular weight DNA के लिए कौन सा handling सही है?

Which handling is correct for high molecular weight DNA?

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D. gentle mixing

Explanation

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High molecular weight DNA लंबा और shear-sensitive होता है। Gentle mixing integrity बचाती है। / High molecular weight DNA is long and shear-sensitive. Gentle mixing preserves integrity.

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DNA extraction में low yield का एक सामान्य कारण क्या हो सकता है?

What can be a common reason for low yield in DNA extraction?

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A. अपूर्ण cell lysisIncomplete cell lysis

Explanation

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अगर cells पूरी तरह नहीं टूटतीं तो DNA release कम होगा। Lysis step yield के लिए critical है। / If cells are not fully broken DNA release will be low. The lysis step is critical for yield.

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DNA yield कम हो लेकिन purity अच्छी हो तो क्या अर्थ है?

What does low yield but good purity mean?

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B. DNA साफ है पर मात्रा कम हैDNA is clean but quantity is low

Explanation

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Purity और yield अलग parameters हैं। अच्छा ratio high concentration की guarantee नहीं देता। / Purity and yield are different parameters. A good ratio does not guarantee high concentration.

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DNA purity खराब हो लेकिन yield high हो तो क्या करना उचित हो सकता है?

If DNA purity is poor but yield is high what may be appropriate?

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C. additional cleanup करनाPerform additional cleanup

Explanation

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High yield sample भी impurities के कारण unusable हो सकता है। Cleanup downstream reactions के लिए मदद करता है। / A high-yield sample can still be unusable due to impurities. Cleanup helps downstream reactions.

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DNA cleanup का मुख्य उद्देश्य क्या है?

What is the main purpose of DNA cleanup?

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D. inhibitors और impurities हटानाRemoving inhibitors and impurities

Explanation

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Cleanup residual salts phenol protein या ethanol जैसी impurities हटाने में मदद करता है। इससे PCR और digestion बेहतर हो सकते हैं। / Cleanup helps remove residual impurities such as salts phenol protein or ethanol. This can improve PCR and digestion.

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PCR inhibitors DNA extraction में कहाँ से आ सकते हैं?

Where can PCR inhibitors come from in DNA extraction?

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A. plant compounds salts phenol या ethanol सेFrom plant compounds salts phenol or ethanol

Explanation

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PCR inhibitors amplification को रोक सकते हैं। Proper cleanup और dilution मदद कर सकते हैं। / PCR inhibitors can stop amplification. Proper cleanup and dilution can help.

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DNA sample dilute करना कब helpful हो सकता है?

When can diluting a DNA sample be helpful?

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B. inhibitors की effect घटाने या concentration adjust करने के लिएTo reduce inhibitor effect or adjust concentration

Explanation

Simple Explanation

Dilution template amount और inhibitor concentration दोनों adjust कर सकती है। PCR setup में यह practical है। / Dilution can adjust both template amount and inhibitor concentration. It is practical in PCR setup.

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Restriction digestion के लिए DNA sample कैसा होना चाहिए?

What kind of DNA sample is needed for restriction digestion?

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C. enzyme-compatible clean DNA

Explanation

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Restriction enzymes impurities से inhibit हो सकते हैं। Clean DNA और suitable buffer जरूरी हैं। / Restriction enzymes can be inhibited by impurities. Clean DNA and suitable buffer are necessary.

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DNA isolation के बाद cloning के लिए सबसे जरूरी quality क्या है?

What is the most important quality for cloning after DNA isolation?

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D. usable purity और intact DNAUsable purity and intact DNA

Explanation

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Cloning के लिए DNA contaminants से मुक्त और sufficiently intact होना चाहिए। Poor quality cloning failure दे सकती है। / For cloning DNA should be free from contaminants and sufficiently intact. Poor quality can cause cloning failure.

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DNA concentration बहुत अधिक हो तो PCR में क्या करना चाहिए?

If DNA concentration is too high what should be done for PCR?

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A. proper dilution बनानाMake a proper dilution

Explanation

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PCR में template amount optimized होना चाहिए। Dilution suitable concentration देता है। / Template amount should be optimized in PCR. Dilution gives a suitable concentration.

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DNA concentration बहुत कम हो तो कौन सा issue आ सकता है?

What issue can occur if DNA concentration is too low?

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B. DNA हमेशा बेहतर होगाDNA will always be better

Explanation

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बहुत कम template downstream reactions में weak signal दे सकता है। Concentration check important है। / Too little template can give weak signal in downstream reactions. Concentration check is important.

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NanoDrop जैसे उपकरण से क्या अनुमान लगाया जा सकता है?

What can be estimated using an instrument like NanoDrop?

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C. DNA concentration और purity ratiosDNA concentration and purity ratios

Explanation

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NanoDrop absorbance से DNA concentration और purity ratios estimate करता है। यह quick quality check देता है। / NanoDrop estimates DNA concentration and purity ratios by absorbance. It gives quick quality check.

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Fluorometric DNA quantification absorbance से कब बेहतर हो सकता है?

When can fluorometric DNA quantification be better than absorbance?

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D. specific double-stranded DNA amount जानना होWhen specific double-stranded DNA amount is needed

Explanation

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Fluorometric methods DNA-specific dyes use कर सकते हैं। यह contaminants के बीच अधिक specific हो सकता है। / Fluorometric methods can use DNA-specific dyes. This can be more specific among contaminants.

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Gel electrophoresis से DNA quantity का क्या अनुमान मिल सकता है?

What quantity estimate can gel electrophoresis provide for DNA?

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A. band intensity से approximate amountApproximate amount from band intensity

Explanation

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Known ladder या standard से band intensity compare कर approximate DNA amount देख सकते हैं। यह rough estimate है। / Band intensity can be compared with a known ladder or standard for approximate DNA amount. It is a rough estimate.

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DNA ladder gel electrophoresis में क्यों उपयोगी है?

Why is a DNA ladder useful in gel electrophoresis?

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B. size comparison के लिएFor size comparison

Explanation

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DNA ladder known sizes के fragments देता है। इससे sample DNA band size estimate होता है। / A DNA ladder provides fragments of known sizes. This helps estimate sample DNA band size.

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Gel पर बहुत नीचे छोटे fragments दिखें तो क्या संकेत हो सकता है?

If very low small fragments appear on a gel what can it indicate?

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C. degraded या fragmented DNADegraded or fragmented DNA

Explanation

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छोटे fragments DNA breakdown का संकेत दे सकते हैं। Handling और nuclease control check करें। / Small fragments can indicate DNA breakdown. Check handling and nuclease control.

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DNA का gel में positive electrode की ओर जाना किस कारण होता है?

Why does DNA move toward the positive electrode in a gel?

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D. DNA negatively charged होता हैDNA is negatively charged

Explanation

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DNA phosphate backbone के कारण negatively charged होता है। इसलिए electric field में positive electrode की ओर जाता है। / DNA is negatively charged due to phosphate backbone. Therefore it moves toward the positive electrode in an electric field.

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DNA extraction में cross-contamination कैसे घटाई जा सकती है?

How can cross-contamination be reduced in DNA extraction?

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A. fresh tips और proper labelling सेBy fresh tips and proper labelling

Explanation

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Fresh tips और careful handling samples को mix होने से बचाते हैं। Labels identity सुरक्षित रखते हैं। / Fresh tips and careful handling prevent samples from mixing. Labels protect identity.

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Aerosol-resistant tips DNA work में क्यों useful हैं?

Why are aerosol-resistant tips useful in DNA work?

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B. sample-to-sample contamination घटाने के लिएTo reduce sample-to-sample contamination

Explanation

Simple Explanation

Aerosol-resistant tips aerosol contamination का risk कम करती हैं। Sensitive DNA work में यह useful है। / Aerosol-resistant tips reduce aerosol contamination risk. They are useful in sensitive DNA work.

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DNA extraction में gloves बदलना कब अच्छा practice है?

When is changing gloves a good practice in DNA extraction?

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C. different samples handle करते समयWhile handling different samples

Explanation

Simple Explanation

Dirty gloves contaminants या nucleases transfer कर सकते हैं। Different samples में clean handling जरूरी है। / Dirty gloves can transfer contaminants or nucleases. Clean handling is needed between different samples.

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DNA isolation में sterile nuclease-free consumables क्यों जरूरी हैं?

Why are sterile nuclease-free consumables important in DNA isolation?

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D. contamination और DNA degradation घटाने के लिएTo reduce contamination and DNA degradation

Explanation

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Nuclease-free tubes और tips DNA को टूटने से बचाते हैं। Sterility sample contamination घटाती है। / Nuclease-free tubes and tips protect DNA from breakdown. Sterility reduces sample contamination.

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Chain of custody type record DNA samples में किसलिए useful है?

Why is a chain-of-custody type record useful for DNA samples?

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A. sample tracking और accountability के लिएFor sample tracking and accountability

Explanation

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Tracking record बताता है कि sample कब और किसने handle किया। इससे reliability बढ़ती है। / A tracking record shows when and by whom the sample was handled. This increases reliability.

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DNA isolation में lab notebook में क्या लिखना useful है?

What is useful to write in a lab notebook during DNA isolation?

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B. sample source method yield और puritySample source method yield and purity

Explanation

Simple Explanation

Records experiment repeat और troubleshoot करने में मदद करते हैं। Sample identity भी सुरक्षित रहती है। / Records help repeat and troubleshoot the experiment. Sample identity is also protected.

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Duplicate extraction क्यों की जा सकती है?

Why can duplicate extraction be done?

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C. result reliability check करने के लिएTo check result reliability

Explanation

Simple Explanation

Duplicate extraction reproducibility दिखा सकती है। Important samples में confidence बढ़ता है। / Duplicate extraction can show reproducibility. Confidence increases for important samples.

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DNA isolation में biological sample handling safety क्यों जरूरी है?

Why is biological sample handling safety important in DNA isolation?

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D. pathogen या hazard risk कम करने के लिएTo reduce pathogen or hazard risk

Explanation

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Biological samples में unknown hazards हो सकते हैं। PPE और biosafety rules safe handling के लिए जरूरी हैं। / Biological samples may contain unknown hazards. PPE and biosafety rules are needed for safe handling.

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Used lysis waste को safe dispose क्यों करना चाहिए?

Why should used lysis waste be disposed safely?

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A. chemical और biological risk कम करने के लिएTo reduce chemical and biological risk

Explanation

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Lysis waste में biological material और chemicals हो सकते हैं। Proper disposal safety का हिस्सा है। / Lysis waste can contain biological material and chemicals. Proper disposal is part of safety.

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Ethanol को flame से दूर क्यों रखना चाहिए?

Why should ethanol be kept away from flame?

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B. क्योंकि यह flammable solvent हैBecause it is a flammable solvent

Explanation

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Ethanol आसानी से आग पकड़ सकता है। Lab safety में इसे heat और flame से दूर रखते हैं। / Ethanol can catch fire easily. In lab safety it is kept away from heat and flame.

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Phenol का उपयोग करते समय fume hood क्यों जरूरी हो सकता है?

Why may a fume hood be necessary while using phenol?

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C. hazardous fumes से protection के लिएFor protection from hazardous fumes

Explanation

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Phenol hazardous और corrosive हो सकता है। Fume hood और PPE safety के लिए important हैं। / Phenol can be hazardous and corrosive. Fume hood and PPE are important for safety.

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DNA isolation में ethical sample use का अर्थ क्या है?

What does ethical sample use mean in DNA isolation?

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D. approved consent और rules के अनुसार sample use करनाUsing sample according to approved consent and rules

Explanation

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Biological samples का use rules और consent के अनुसार होना चाहिए। Ethical practice responsible biotechnology का भाग है। / Biological samples should be used according to rules and consent. Ethical practice is part of responsible biotechnology.

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DNA sample identity खो जाने से क्या समस्या होती है?

What problem occurs if DNA sample identity is lost?

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A. analysis का result गलत sample से जुड़ सकता हैThe analysis result may be linked to the wrong sample

Explanation

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Sample identity lost होने पर conclusion unreliable हो जाता है। Label और records इसे रोकते हैं। / If sample identity is lost conclusions become unreliable. Labels and records prevent this.

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DNA isolation में yield purity और integrity तीनों क्यों देखे जाते हैं?

Why are yield purity and integrity all checked in DNA isolation?

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A. तीनों sample usefulness को अलग-अलग बताते हैंAll three describe sample usefulness differently

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Yield amount बताता है purity contamination बताती है और integrity DNA टूटने की स्थिति बताती है। तीनों important हैं। / Yield tells amount purity tells contamination and integrity tells DNA breakage status. All three are important.

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DNA isolation के बाद storage buffer चुनते समय क्या ध्यान रखना चाहिए?

What should be considered while choosing storage buffer after DNA isolation?

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A. DNA stability और downstream useDNA stability and downstream use

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TE buffer DNA stability देता है पर EDTA कुछ enzyme reactions में affect कर सकता है। Downstream use के अनुसार buffer चुनें। / TE buffer gives DNA stability but EDTA can affect some enzyme reactions. Choose buffer according to downstream use.

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Long-term storage के लिए DNA को aliquot करने का एक लाभ क्या है?

What is one benefit of aliquoting DNA for long-term storage?

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A. repeated freeze-thaw damage कम करनाReducing repeated freeze-thaw damage

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Aliquots same tube को बार-बार thaw करने से बचाते हैं। इससे DNA quality सुरक्षित रहती है। / Aliquots avoid repeated thawing of the same tube. This protects DNA quality.

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Level 43 का मुख्य exam-safe revision point क्या है?

What is the main exam-safe revision point of Level 43?

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A. sample type method purity troubleshooting और safety साथ पढ़ेंStudy sample type method purity troubleshooting and safety together

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DNA isolation में sample और method के अनुसार challenges बदलते हैं। Quality control और safety को साथ याद रखें। / In DNA isolation challenges change with sample and method. Remember quality control and safety together.

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Isolation of DNA level 43 का safe summary क्या है?

What is the safe summary of Isolation of DNA level 43?

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A. अलग samples के लिए सही method और quality checks जरूरी हैंCorrect method and quality checks are needed for different samples

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Plant bacterial fungal और plasmid samples की needs अलग हो सकती हैं। Clean intact DNA ही आगे use होता है। / Plant bacterial fungal and plasmid samples can have different needs. Clean intact DNA is used further.

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FAQs

Class 11 Biotechnology Quiz FAQs

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 48 questions are available for the selected class and difficulty.

Is there a timer in this quiz?

Yes, the timer uses 40 seconds per question for Easy difficulty and shows the total remaining time on the page.

Can I open each question separately?

Yes, every question has its own SEO-friendly page with answer, explanation and related practice links.