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298
Q:

Which one of the following types of waves are used in a night vision apparatus?

A) Radio waves B) Microwaves
C) Infra-red waves D) None of the above

Answer:   C) Infra-red waves



Explanation:
Subject: General Science
Related Questions
Q:

Which one among the following stars is nearest to the earth?

A) Proxima Centauri B) Sirius
C) Arcturus D) Spica
 
Answer & Explanation Answer: A) Proxima Centauri

Explanation:

Proxima Centauri is the nearest star to the Earth.

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9 379
Q:

Plants wilt due to excess of

A) Photosynthesis B) Absorption
C) Transpiration D) None of the above
 
Answer & Explanation Answer: C) Transpiration

Explanation:

Plants wilt due to excess of Transpiration.

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Q:

An ideal habitat with unlimited resources is associated with

A) Neither exponential growth nor logistic growth B) Population crashes
C) Logistic growth D) Exponential growth
 
Answer & Explanation Answer: D) Exponential growth

Explanation:

An ideal habitat with unlimited resources is associated with Exponential growth.

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6 394
Q:

Which part of the brain is responsible for memory?

A) Cerebellum B) Medulla Oblongata
C) Cerebrum D) All of the above
 
Answer & Explanation Answer: A) Cerebellum

Explanation:
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4 362
Q:

The primary colors are-

A) Yellow, red, blue B) Green, white, black
C) Blue, green, yellow D) Red, blue, green
 
Answer & Explanation Answer: D) Red, blue, green

Explanation:

The Primary Colours are Blue, Red and Green. By mixing all these three primary colours we get White colour. 

The Secondary Colours are - Yellow, Magenta and Cyan.

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11 330
Q:

DNA fingerprinting is used to identify the

A) Rapist B) Parents
C) Thieves D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

DNA fingerprinting is used to identify the parents, thieves and rapists.

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12 346
Q:

The substance which makes natural rubber more strong and bouncy?

A) Chlorine B) Sulphur
C) Sponge D) Polythene
 
Answer & Explanation Answer: B) Sulphur

Explanation:

Sulfur vulcanisation is a chemical process for converting natural rubber or related polymers into more durable materials by heating them with sulfur. By this they achieve improved elasticity, resilience, tensile strength, viscosity, hardness and weather resistance.

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Q:

A universal recipient blood group belongs to

A) O B) A
C) B D) AB
 
Answer & Explanation Answer: D) AB

Explanation:

In transfusions of packed red blood cells, individuals with type O Rh D negative blood are often called universal donors. Those with type AB Rh D positive blood are called universal recipients.

The immune system of a person with AB blood will accept blood from all possible donors, whether they have O, A, B, or AB blood. Since both A and B antigens are present in a person with AB blood, the recipient won't reject the blood. The body identifies that blood as "self" rather than "foreign."

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