Concept-wise Practice

class12 MCQ Questions for Class 12

class12 se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

741 questions tagged with class12.

Oral contraceptive pills सामान्यतः किसके आधार पर काम करती हैं?

Oral contraceptive pills generally work on the basis of what?

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Correct Answer

A. Hormonal control

Step 1

Concept

Identify the concept: this is the mechanism of oral pills.

Step 2

Why this answer is correct

Pills control ovulation and reproductive tract conditions through hormones.

Step 3

Exam Tip

Exam tip: remember oral pills as hormonal methods.

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Copper releasing IUDs मुख्य रूप से sperm पर क्या प्रभाव डालते हैं?

What is the main effect of copper releasing IUDs on sperms?

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Correct Answer

A. Sperm motility और fertilizing capacity कम करते हैंReduce sperm motility and fertilizing capacity

Step 1

Concept

Identify the concept: this is the mechanism of copper IUD.

Step 2

Why this answer is correct

Copper ions reduce sperm motility and fertilizing ability.

Step 3

Exam Tip

Exam tip: copper IUD reduces sperm function.

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IUD को शरीर के किस भाग में लगाया जाता है?

In which body part is an IUD inserted?

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Correct Answer

A. Uterus

Step 1

Concept

Identify the concept: this is IUD placement.

Step 2

Why this answer is correct

An IUD is inserted into the female uterus by a trained medical professional.

Step 3

Exam Tip

Exam tip: IUD means intrauterine device.

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Copper-T किस प्रकार का contraceptive है?

Copper-T is which type of contraceptive?

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Correct Answer

A. IUD

Step 1

Concept

Identify the concept: this is an example of IUD.

Step 2

Why this answer is correct

Copper-T is an intrauterine device placed in the uterus.

Step 3

Exam Tip

Exam tip: remember Copper-T as an IUD.

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Condom का एक अतिरिक्त लाभ क्या है?

What is one additional benefit of condoms?

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Correct Answer

A. STI से protection में मददHelps in protection from STI

Step 1

Concept

Identify the concept: this is a health benefit of condoms.

Step 2

Why this answer is correct

Along with pregnancy prevention condoms can reduce the risk of many sexually transmitted infections.

Step 3

Exam Tip

Exam tip: remember condom as contraception plus STI protection.

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निम्न में से barrier contraceptive कौन सा है?

Which of the following is a barrier contraceptive?

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Correct Answer

A. Condom

Step 1

Concept

Identify the concept: this is about types of contraceptives.

Step 2

Why this answer is correct

Condom prevents meeting of sperm and ovum by a physical barrier.

Step 3

Exam Tip

Exam tip: condom is a common example of barrier method.

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Contraception का अर्थ क्या है?

What does contraception mean?

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Correct Answer

A. गर्भधारण रोकने की विधिMethod to prevent pregnancy

Step 1

Concept

Identify the concept: this is the basic definition of contraception.

Step 2

Why this answer is correct

Contraceptive methods help prevent unwanted pregnancy.

Step 3

Exam Tip

Exam tip: contraception means pregnancy prevention.

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Family planning का मुख्य उद्देश्य क्या है?

What is the main aim of family planning?

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A. जिम्मेदार और planned parenthoodResponsible and planned parenthood

Step 1

Concept

Identify the concept: this is the aim of family planning.

Step 2

Why this answer is correct

Family planning helps couples plan children with proper timing and spacing.

Step 3

Exam Tip

Exam tip: family planning means planned parenthood.

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Reproductive health education का मुख्य उद्देश्य क्या है?

What is the main aim of reproductive health education?

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Correct Answer

A. सही जानकारी और जिम्मेदार व्यवहार बढ़ानाTo increase correct knowledge and responsible behaviour

Step 1

Concept

Identify the concept: this is about awareness.

Step 2

Why this answer is correct

Correct education helps students understand reproductive issues and safety better.

Step 3

Exam Tip

Exam tip: awareness helps in prevention.

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RCH programme का full form क्या है?

What is the full form of RCH programme?

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Correct Answer

A. Reproductive and Child Health Care

Step 1

Concept

Identify the concept: this is about a reproductive health programme.

Step 2

Why this answer is correct

RCH stands for Reproductive and Child Health Care.

Step 3

Exam Tip

Exam tip: remember RCH with mother and child health.

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Reproductive health का सही अर्थ क्या है?

What is the correct meaning of reproductive health?

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A. जनन संबंधी सभी पहलुओं में पूर्ण स्वस्थताComplete well-being in all reproductive aspects

Step 1

Concept

Identify the concept: this is the definition of reproductive health.

Step 2

Why this answer is correct

Reproductive health includes physical mental and social well-being.

Step 3

Exam Tip

Exam tip: remember reproductive health as complete well-being.

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Fertilization के लिए sperm और ovum का fusion क्या बनाता है?

Fusion of sperm and ovum during fertilization forms what?

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Correct Answer

A. Zygote

Step 1

Concept

Identify the concept: this is the direct result of fertilization.

Step 2

Why this answer is correct

Fusion of sperm and ovum forms a diploid zygote.

Step 3

Exam Tip

Exam tip: remember gamete fusion equals zygote.

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Mammary glands का मुख्य कार्य क्या है?

What is the main function of mammary glands?

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Correct Answer

A. Milk production for newborn

Step 1

Concept

Identify the concept: this is function of mammary glands.

Step 2

Why this answer is correct

Mammary glands produce milk for the newborn after childbirth.

Step 3

Exam Tip

Exam tip: remember mammary glands with lactation.

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Female external genitalia को सामूहिक रूप से क्या कहते हैं?

Female external genitalia are collectively called what?

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Correct Answer

A. Vulva

Step 1

Concept

Identify the concept: this is female reproductive anatomy term.

Step 2

Why this answer is correct

Female external genitalia are collectively called vulva.

Step 3

Exam Tip

Exam tip: vulva means external female genitalia.

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Graafian follicle किससे संबंधित है?

Graafian follicle is related to what?

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Correct Answer

A. Mature ovarian follicle

Step 1

Concept

Identify the concept: this is ovarian follicle stage.

Step 2

Why this answer is correct

Graafian follicle is the mature follicle that releases ovum during ovulation.

Step 3

Exam Tip

Exam tip: connect Graafian follicle with ovulation.

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LH male reproductive system में किस cells को stimulate करता है?

LH stimulates which cells in male reproductive system?

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Correct Answer

A. Leydig cells

Step 1

Concept

Identify the concept: this is male hormone regulation.

Step 2

Why this answer is correct

LH stimulates Leydig cells to produce androgens.

Step 3

Exam Tip

Exam tip: LH plus Leydig equals testosterone.

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FSH male reproductive system में किस cells पर काम करता है?

FSH acts on which cells in male reproductive system?

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Correct Answer

A. Sertoli cells

Step 1

Concept

Identify the concept: this is hormonal control of spermatogenesis.

Step 2

Why this answer is correct

FSH acts on Sertoli cells and supports spermatogenesis.

Step 3

Exam Tip

Exam tip: remember FSH plus Sertoli.

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Spermiation का अर्थ क्या है?

What does spermiation mean?

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Correct Answer

A. Mature sperms का seminiferous tubules से release होनाRelease of mature sperms from seminiferous tubules

Step 1

Concept

Identify the concept: this is sperm release term.

Step 2

Why this answer is correct

Release of mature sperms from seminiferous tubules is called spermiation.

Step 3

Exam Tip

Exam tip: spermiation means sperm release.

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Spermiogenesis का अर्थ क्या है?

What does spermiogenesis mean?

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Correct Answer

A. Spermatids का sperms में बदलनाTransformation of spermatids into sperms

Step 1

Concept

Identify the concept: this is final transformation in spermatogenesis.

Step 2

Why this answer is correct

During spermiogenesis spermatids change into mature sperms.

Step 3

Exam Tip

Exam tip: spermatid to sperm means spermiogenesis.

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Primary sex organ in females कौन सा है?

Which is the primary sex organ in females?

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Correct Answer

A. Ovary

Step 1

Concept

Identify the concept: this is female primary sex organ.

Step 2

Why this answer is correct

Ovary is the primary sex organ because it produces ova and hormones.

Step 3

Exam Tip

Exam tip: ovary makes ovum and hormones.

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Primary sex organ in males कौन सा है?

Which is the primary sex organ in males?

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Correct Answer

A. Testis

Step 1

Concept

Identify the concept: this is primary sex organ.

Step 2

Why this answer is correct

Male primary sex organ is testis because it produces gametes and hormones.

Step 3

Exam Tip

Exam tip: primary sex organ makes gametes.

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Colostrum किससे भरपूर होता है?

Colostrum is rich in what?

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Correct Answer

A. Antibodies

Step 1

Concept

Identify the concept: this is about first milk.

Step 2

Why this answer is correct

Colostrum is rich in antibodies and gives immunity to the newborn.

Step 3

Exam Tip

Exam tip: remember colostrum as first immunity milk.

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दूध उत्पादन की प्रक्रिया को क्या कहते हैं?

What is the process of milk production called?

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Correct Answer

A. Lactation

Step 1

Concept

Identify the concept: this is function of mammary glands.

Step 2

Why this answer is correct

Milk production by mammary glands after childbirth is called lactation.

Step 3

Exam Tip

Exam tip: lactation means milk production.

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Parturition में uterus contraction को कौन सा hormone stimulate करता है?

Which hormone stimulates uterine contractions during parturition?

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Correct Answer

A. Oxytocin

Step 1

Concept

Identify the concept: this is hormone of parturition.

Step 2

Why this answer is correct

Oxytocin stimulates strong contractions of the uterus.

Step 3

Exam Tip

Exam tip: remember oxytocin as birth contraction hormone.

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Birth process को biology में क्या कहते हैं?

What is the birth process called in biology?

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Correct Answer

A. Parturition

Step 1

Concept

Identify the concept: this is childbirth term.

Step 2

Why this answer is correct

The process of birth of baby is called parturition.

Step 3

Exam Tip

Exam tip: remember parturition means birth.

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मानव pregnancy लगभग कितने महीने की होती है?

Human pregnancy is about how many months?

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Correct Answer

C. 9 महीने9 months

Step 1

Concept

Identify the concept: this is a basic fact about gestation period.

Step 2

Why this answer is correct

Human gestation period is about 9 months.

Step 3

Exam Tip

Exam tip: remember human pregnancy as roughly 9 months.

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Gestation period का अर्थ क्या है?

What does gestation period mean?

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Correct Answer

A. Fertilization से birth तक का समयTime from fertilization to birth

Step 1

Concept

Identify the concept: this is a pregnancy duration term.

Step 2

Why this answer is correct

Gestation period is the time of development from fertilization to birth.

Step 3

Exam Tip

Exam tip: remember gestation as pregnancy period.

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Placenta कौन सा pregnancy hormone स्रावित करता है?

Placenta secretes which pregnancy hormone?

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Correct Answer

A. hCG

Step 1

Concept

Identify the concept: this is endocrine function of placenta.

Step 2

Why this answer is correct

Placenta secretes hormones such as hCG which help maintain pregnancy.

Step 3

Exam Tip

Exam tip: connect hCG with pregnancy hormone.

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Foetus placenta से किस structure द्वारा जुड़ा रहता है?

Foetus is connected to placenta through which structure?

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Correct Answer

A. Umbilical cord

Step 1

Concept

Identify the concept: this is foetal connection.

Step 2

Why this answer is correct

Umbilical cord connects the foetus with the placenta.

Step 3

Exam Tip

Exam tip: remember umbilical cord as foetus placenta connection.

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Placenta का मुख्य कार्य क्या है?

What is the main function of placenta?

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Correct Answer

A. मां और भ्रूण के बीच पदार्थों का आदान प्रदानExchange of materials between mother and foetus

Step 1

Concept

Identify the concept: this is placenta function.

Step 2

Why this answer is correct

Placenta allows exchange of gases nutrients and wastes between mother and foetus.

Step 3

Exam Tip

Exam tip: remember placenta as the exchange organ.

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