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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.

Question 1963

Which of the following statements is correct ?

AProtons are negatively charged and are present in the nucleus

BElectrons are positively charged and are present in the nucleus

CElectrons are negatively charged and are present in the orbits

DThe entire mass of atom is distributed in the orbits.

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C. Electrons are negatively charged and are present in the orbitsExplanation: Electrons are negatively charged particles that revolve around the nucleus in fixed paths called orbits or shells. The nucleus contains positively charged protons and neutral neutrons, and most of the atom’s mass is concentrated in the nucleus.

Question 1962

The physical quantity which is measured as Kg m/s2 is:

AWork

BPower

CForce

DMotion

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C. ForceThe physical quantity measured in kg·m/s2 is Force. The SI unit of force is the Newton (N), which is defined as the force required to accelerate a mass of 1 kilogram by 1 meter per second squared. Mathematically, Force = Mass × Acceleration. Work: Measured in joules (N·m).Power: Measured in watts (J/s).Motion: Describes movement, not a measurable quantity in these units.

Question 1961

In medical terminology, USG stands for:

AUndersized gland

BUltrasonography

CUnsegmented gonads

DNone of the above

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B. UltrasonographyIn medical terminology, USG stands for Ultrasonography. It is a diagnostic imaging technique that uses high-frequency sound waves to create images of internal organs, tissues, and developing fetuses. USG is commonly used in obstetrics, cardiology, and abdominal examinations as it is safe and non-invasive. Undersized gland: Not a recognized medical term.Unsegmented gonads: Incorrect and unrelated to imaging.None of the above: Incorrect as option B is correct.

Question 1960

Widal test is employed to diagnose:

ATyphoid

BCholera

CTuberculosis

DAIDS

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A. TyphoidThe Widal test is used to diagnose Typhoid fever, a bacterial infection caused by Salmonella typhi. The test detects the presence of agglutinating antibodies (O and H) in a patient’s serum against the antigens of the typhoid bacteria. It helps confirm infection during the second week of illness. Cholera: Diagnosed by stool culture for Vibrio cholerae.Tuberculosis: Detected using sputum test or Mantoux test.AIDS: Diagnosed through ELISA or Western blot test for HIV.

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Science

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:

Which of the following statements is correct ?

The physical quantity which is measured as Kg m/s2 is:

In medical terminology, USG stands for:

Widal test is employed to diagnose:

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