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Question 1973

Which of the following is not a biofertilizer ?

ARhizobium

BMucor

CAzotobacter

DAnabaena

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B. MucorExplanation: Mucor is not a biofertilizer; it is a saprophytic fungus that grows on decaying organic matter. Biofertilizers are living microorganisms that enhance soil fertility by fixing atmospheric nitrogen or solubilizing nutrients. Examples include Rhizobium, Azotobacter, and Anabaena.

Question 1972

Opium is derived from which part of poppy plant ?

ASeeds

BLeaves

CBark

DCapsule

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D. CapsuleExplanation: Opium is obtained from the latex present in the unripe capsule of the poppy plant (Papaver somniferum). The latex is collected by making incisions on the capsule, and after drying, it forms raw opium, which contains alkaloids like morphine and codeine.

Question 1971

Which of the following is not a viral disease ?

ATuberculosis

BPolio

CSwine flu

DHepatitis

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A. TuberculosisExplanation: Tuberculosis (TB) is not a viral disease; it is caused by a bacterium called Mycobacterium tuberculosis. In contrast, Polio, Swine flu, and Hepatitis are viral diseases caused by different types of viruses.

Question 1970

Which of the following cells produce immune response in human body ?

ARed blood cells

BWhite blood cells

CEpithelical cells

DAdipose cells

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B. White blood cellsExplanation: White blood cells (WBCs), also known as leukocytes, are responsible for producing the immune response in the human body. They defend against infections by attacking bacteria, viruses, and other foreign invaders, helping to maintain the body’s immunity.

Question 1969

Which of the following is not a renewable source of energy ?

ANatural gas

BGeothermal energy

CFlowing water

DBiomass

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A. Natural gasExplanation: Natural gas is a non-renewable source of energy because it is formed from fossilized organic matter over millions of years and cannot be replenished quickly. In contrast, geothermal energy, flowing water, and biomass are renewable as they can be naturally regenerated over short periods.

Question 1968

Magnification produced by a rear view mirror fitted in vehicles:

Ais less than the object

Bis more than the object

Cis equal to the object

Dcan be more or less than the object depending upon the position of object in front of it.

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A. is less than the objectExplanation: Acids do not turn red litmus to blue; they turn blue litmus paper red. Acids are sour in taste, corrosive in nature, and have a pH value less than 7. The statement that acids turn red litmus to blue is incorrect.

Question 1967

Which of the following is not a property of acids ?

AAll acids have sour taste

BAll acids are corrosive in nature

CFor acidic solutions pH =

DAcids tum red litmus to blue

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D. Acids tum red litmus to blueExplanation: Acids do not turn red litmus to blue; they turn blue litmus paper red. Acids are sour in taste, corrosive in nature, and have a pH value less than 7. The statement that acids turn red litmus to blue is incorrect.

Question 1966

Which of the following cell organelles is referred to as the 'suicidal bags' or 'disposal units' ?

ALysosome

BPeroxisomes

CGlyoxisomes

DMtochondria

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A. LysosomeExplanation: Lysosomes are known as the ‘suicidal bags’ or ‘disposal units’ of the cell because they contain powerful digestive enzymes capable of breaking down worn-out cell parts, foreign substances, and even the entire cell when it becomes damaged or obsolete.

Question 1965

Boiling point of water inside a sealed pressure cooker is:

A100℃

B121℃

C95℃

D0℃

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B. 121℃Explanation: Inside a sealed pressure cooker, the pressure is higher than atmospheric pressure, which raises the boiling point of water to about 121℃. This allows food to cook faster because water and steam reach higher temperatures than at normal atmospheric pressure.

Question 1964

ELISA stands for:

AEnzyme-linked immunosorbent assay

BEpithelium lesions in surface analysis

CEnergy-linked immunity assay

DEnzyme-linked immunity analysis

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A. Enzyme-linked immunosorbent assayExplanation: ELISA stands for Enzyme-linked immunosorbent assay. It is a biochemical test used to detect and measure antibodies, antigens, proteins, or hormones in a sample. The method relies on an enzyme-linked antigen or antibody and a color change to indicate a positive reaction.

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Explore the question bank

Which of the following is not a biofertilizer ?

Opium is derived from which part of poppy plant ?

Which of the following is not a viral disease ?

Which of the following cells produce immune response in human body ?

Which of the following is not a renewable source of energy ?

Magnification produced by a rear view mirror fitted in vehicles:

Which of the following is not a property of acids ?

Which of the following cell organelles is referred to as the 'suicidal bags' or 'disposal units' ?

Boiling point of water inside a sealed pressure cooker is:

ELISA stands for:

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