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Question 658

A man who looks on the bright side of things. (one word substitution)

AOptimist

BPessimist

CSnob

DCynic

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A. OptimistExplanation not yet available.

Question 657

A thing which easily catches fire. (one word substitution)

AEfforescent

BCallous

CImpatient

DInflammable

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D. InflammableExplanation not yet available.

Question 656

A place where birds are kept. (one word substitution)

AAttic

BNursery

CAviary

DZoo

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C. AviaryExplanation not yet available.

Question 645

Acid rain is caused due to the pollution of environment by:

ACarbondioxide and Nitrogen

BCarbon monoxide and Carbondioxide

COzone and Methane

DSome oxide of Nitrogen and Sulpher

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D. Some oxide of Nitrogen and SulpherExplanation: Acid rain is caused by the presence of sulphur dioxide (SO₂) and nitrogen oxides (NOₓ) in the atmosphere. These gases are mainly released from the burning of coal, petroleum, and other fossil fuels in industries and vehicles. When they combine with water vapor and oxygen in the air, they form sulphuric acid (H₂SO₄) and nitric acid (HNO₃). These acids mix with rainwater and fall as acid rain, which damages soil, crops, aquatic life, and even monuments like the Taj Mahal.

Question 644

Dialysis is prescribed for patients having:

ALiver disease

BLung trouble

CKidney trouble

DHeart Disease

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C. Kidney troubleExplanation: Dialysis is a medical procedure prescribed for patients suffering from kidney failure or severe kidney disease. When the kidneys lose their ability to filter waste products, excess salts, and water from the blood, dialysis performs this function artificially. It helps maintain the body’s chemical balance and remove toxins such as urea and creatinine. There are two main types of dialysis: hemodialysis (using a dialysis machine and artificial kidney) and peritoneal dialysis (using the lining of the abdomen as a filter).

Question 643

Seismology is the science of :

AAtmosphere

BEarthquake

CFossil

DSilkworm breeding

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B. EarthquakeExplanation: Seismology is the branch of geophysics that deals with the study of earthquakes and the propagation of seismic waves through the Earth. Scientists who study earthquakes are called seismologists. Seismology helps in understanding the origin, intensity, and effects of earthquakes, as well as the internal structure of the Earth. The intensity of an earthquake is measured using instruments like the seismograph and scales such as the Richter scale or Moment Magnitude scale.

Question 642

The Bhopal Gas Tragedy was caused by :

APhosgen gas

BCarbon monoxide

CMethyl isocyanate

DChlorine

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C. Methyl isocyanateExplanation: The Bhopal Gas Tragedy occurred on the night of December 2–3, 1984, at the Union Carbide pesticide plant in Bhopal, Madhya Pradesh (India). The disaster was caused by the accidental leakage of Methyl Isocyanate (MIC), a highly toxic and reactive gas used in pesticide manufacturing. The poisonous gas spread rapidly over the nearby populated areas, killing thousands of people and causing severe respiratory and neurological disorders. It is considered one of the world’s worst industrial disasters.

Question 641

Which of the following colours is not a primary colour ?

ARed

BYellow

CGreen

DBlue

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B. YellowExplanation: The primary colours of light are Red, Green, and Blue (RGB). These are the fundamental colours that can be combined in different proportions to produce all other colours in the visible spectrum. Yellow is not a primary colour—it is a secondary colour formed by mixing red and green light. This principle of colour mixing is used in television, computer screens, and other digital displays that use RGB colour models.

Question 640

Gir National Park known for lion protection is located in :

AMadhya Pradesh

BUttar Pradesh

CRajasthan

DGujarat

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D. GujaratExplanation not yet available.

Question 639

The Headquarters of United Nations Environment Programme (UNEP) is situated in :

ANairobi

BParis

CCairo

DTunis

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A. NairobiExplanation not yet available.

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Explore the question bank

A man who looks on the bright side of things. (one word substitution)

A thing which easily catches fire. (one word substitution)

A place where birds are kept. (one word substitution)

Acid rain is caused due to the pollution of environment by:

Dialysis is prescribed for patients having:

Seismology is the science of :

The Bhopal Gas Tragedy was caused by :

Which of the following colours is not a primary colour ?

Gir National Park known for lion protection is located in :

The Headquarters of United Nations Environment Programme (UNEP) is situated in :

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