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reaction setup MCQ Questions for Class 11

reaction setup se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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8 questions tagged with reaction setup.

Question 1/8 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 52

Restriction digest में spin-down का practical purpose क्या है?

What is the practical purpose of spin-down in restriction digest?

Explanation opens after your attempt
Correct Answer

A. drops को tube bottom में लानाBringing drops to tube bottom

Step 1

Concept

Spin-down brings droplets on tube wall to the bottom. Thus reaction occurs in complete volume.

Step 2

Why this answer is correct

The correct answer is A. drops को tube bottom में लाना / Bringing drops to tube bottom. Spin-down brings droplets on tube wall to the bottom. Thus reaction occurs in complete volume.

Step 3

Exam Tip

Spin-down tube wall पर लगी droplets को नीचे लाता है। इससे reaction complete volume में होती है।

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Question 2/8 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 50

Restriction digestion के लिए DNA quantification क्यों किया जाता है?

Why is DNA quantification done for restriction digestion?

Explanation opens after your attempt
Correct Answer

A. enzyme और DNA amount सही रखने के लिएTo keep enzyme and DNA amount correct

Step 1

Concept

Knowing DNA amount helps set enzyme units and reaction correctly. This makes digestion reliable.

Step 2

Why this answer is correct

The correct answer is A. enzyme और DNA amount सही रखने के लिए / To keep enzyme and DNA amount correct. Knowing DNA amount helps set enzyme units and reaction correctly. This makes digestion reliable.

Step 3

Exam Tip

DNA amount जानकर enzyme units और reaction setup सही किया जाता है। इससे digestion reliable होती है।

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Question 3/8 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 49

Restriction digest setup में bubbles क्यों avoid करते हैं?

Why are bubbles avoided in restriction digest setup?

Explanation opens after your attempt
Correct Answer

A. accurate mixing और pipetting maintain करने के लिएTo maintain accurate mixing and pipetting

Step 1

Concept

Bubbles can cause inaccurate volume and mixing in small reactions. Gentle pipetting is better.

Step 2

Why this answer is correct

The correct answer is A. accurate mixing और pipetting maintain करने के लिए / To maintain accurate mixing and pipetting. Bubbles can cause inaccurate volume and mixing in small reactions. Gentle pipetting is better.

Step 3

Exam Tip

Bubbles small reaction volumes में inaccurate volume और mixing दे सकते हैं। Gentle pipetting बेहतर है।

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Question 4/8 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 48

Reaction mix में enzyme last में add करने का practical कारण क्या है?

What is the practical reason for adding enzyme last in reaction mix?

Explanation opens after your attempt
Correct Answer

A. enzyme exposure और timing control करनाTo control enzyme exposure and timing

Step 1

Concept

Other components are mixed at correct concentration first. Adding enzyme last gives better reaction timing control.

Step 2

Why this answer is correct

The correct answer is A. enzyme exposure और timing control करना / To control enzyme exposure and timing. Other components are mixed at correct concentration first. Adding enzyme last gives better reaction timing control.

Step 3

Exam Tip

बाकी components पहले सही concentration में मिल जाते हैं। Enzyme last में डालने से reaction timing better control होती है।

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Question 5/8 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 47

Reaction setup में labels क्यों जरूरी हैं?

Why are labels important in reaction setup?

Explanation opens after your attempt
Correct Answer

C. sample mix-up रोकने के लिएTo prevent sample mix-up

Step 1

Concept

Clear labels prevent wrong enzyme or wrong sample mix-up. This is necessary for reliable results.

Step 2

Why this answer is correct

The correct answer is C. sample mix-up रोकने के लिए / To prevent sample mix-up. Clear labels prevent wrong enzyme or wrong sample mix-up. This is necessary for reliable results.

Step 3

Exam Tip

Clear labels wrong enzyme या wrong sample mix-up से बचाते हैं। यह reliable result के लिए जरूरी है।

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Question 6/8 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 46

Reaction tube को gently mix क्यों किया जाता है?

Why is the reaction tube mixed gently?

Explanation opens after your attempt
Correct Answer

A. DNA और enzyme evenly mix करने के लिए without shearingTo mix DNA and enzyme evenly without shearing

Step 1

Concept

Gentle mixing combines reaction components and avoids DNA damage. Avoid harsh vortexing.

Step 2

Why this answer is correct

The correct answer is A. DNA और enzyme evenly mix करने के लिए without shearing / To mix DNA and enzyme evenly without shearing. Gentle mixing combines reaction components and avoids DNA damage. Avoid harsh vortexing.

Step 3

Exam Tip

Gentle mixing reaction components मिलाता है और DNA damage से बचाता है। Harsh vortexing avoid करें।

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Question 7/8 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 46

Restriction digestion setup में enzyme को अंत में क्यों add किया जाता है?

Why is enzyme added last in restriction digestion setup?

Explanation opens after your attempt
Correct Answer

B. reaction conditions ready होने के बाद enzyme exposure control करने के लिएTo control enzyme exposure after reaction conditions are ready

Step 1

Concept

Adding enzyme last ensures reaction conditions are correct first. It helps control activity and timing.

Step 2

Why this answer is correct

The correct answer is B. reaction conditions ready होने के बाद enzyme exposure control करने के लिए / To control enzyme exposure after reaction conditions are ready. Adding enzyme last ensures reaction conditions are correct first. It helps control activity and timing.

Step 3

Exam Tip

Enzyme last में add करने से reaction conditions पहले correct हो जाती हैं। यह activity और timing control में मदद करता है।

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Question 8/8 Easy Biotechnology Processes of Recombinant DNA Technology Cutting of DNA Class 11 Level 46

Restriction enzyme unit का अर्थ क्या है?

What does a restriction enzyme unit mean?

Explanation opens after your attempt
Correct Answer

C. defined condition में DNA काटने की activity amountAmount of activity to cut DNA under defined condition

Step 1

Concept

Enzyme units describe activity. Enzyme amount is chosen according to DNA amount in reaction setup.

Step 2

Why this answer is correct

The correct answer is C. defined condition में DNA काटने की activity amount / Amount of activity to cut DNA under defined condition. Enzyme units describe activity. Enzyme amount is chosen according to DNA amount in reaction setup.

Step 3

Exam Tip

Enzyme units activity बताते हैं। Reaction setup में DNA amount के अनुसार enzyme मात्रा चुनी जाती है।

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