General Science Questions

Q:

A homogeneous mixture is also called

A) Compound B) Pure substance
C) Solution D) None of the above
 
Answer & Explanation Answer: C) Solution

Explanation:

A homogeneous mixture is also called as solution.

The term "solution" is more frequently used when a homogeneous mixture is a liquid, although it is sometimes used if the homogeneous mixture is a gas.

 

Another name for a solid homogeneous mixture of metals is an alloy.

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Q:

Which of the following is a healthy blood pressure level?

A) 120/80 B) 140/90
C) 135/75 D) 130/70
 
Answer & Explanation Answer: A) 120/80

Explanation:

A normal reading would be any blood pressure below 120/80 mm Hg and above 90/60 mm Hg in an adult. If you're in the normal range, no medical intervention is needed.

However, you should maintain a healthy lifestyle and healthy weight to help prevent hypertension from developing.

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Q:

Activation of the receptors by stimuli is called

A) Perception B) Habituation
C) Adaptation D) Sensation
 
Answer & Explanation Answer: D) Sensation

Explanation:

Activation of the receptors by stimuli is called Sensation.

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Q:

The moon that we see in the sky is a _____.

A) Planet B) Star
C) Sun D) Satellite
 
Answer & Explanation Answer: D) Satellite

Explanation:
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Q:

The wrist is what to the hand?

A) Deep B) Proximal
C) Lateral D) Superior
 
Answer & Explanation Answer: B) Proximal

Explanation:
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Q:

Very small insoluble particles in a liquid may be separated from it by using

A) crystallization B) fractional distillation
C) centrifugation D) decantation
 
Answer & Explanation Answer: C) centrifugation

Explanation:

Sometimes the solid particles in a liquid are very small and can pass through a filter paper. For such particles, the filtration technique cannot be used for separation. Such mixtures are separated by centrifugation.

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Q:

Cobalt 60 is used for cancer treatment it emmits which rays?

A) Alpha B) Beta
C) Gamma D) X rays
 
Answer & Explanation Answer: C) Gamma

Explanation:

Cobalt therapy or cobalt-60 therapy is the medical use of gamma rays from the radioisotope cobalt-60 to treat conditions such as cancer.

 

Cobalt 60 is a synthetic radioactive isotope of cobalt with a half-life of 5.2714 years. It is produced artificially in nuclear reactors.

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Q:

A grouping of stars that resembles a picture

A) Galaxy B) Asteroid
C) Constellation D) Milkyway
 
Answer & Explanation Answer: C) Constellation

Explanation:

A grouping of stars that resembles a picture i.e, forms an imaginary outline or pattern typically representing an animal, mythological person or creature, a god, or an inanimate object is called a constellation. The night sky is divided into 88 sections called constellations.

 

A_grouping_of_stars_that_resembles_a_picture1560168542.png image

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