Questions

Q:

Silicon carbide is used for

A) Making cement paste B) Cutting very hard substances
C) Making statues D) Disinfectant
 
Answer & Explanation Answer: B) Cutting very hard substances

Explanation:

Silicon_carbide_is_used_for11553927357.jpg image

Silicon Carbide is a semiconductor which has silicon and carbon. It is also called as carborundam.

Silicon carbide is used for cutting very hard substances.

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Q:

What is the process of conversion of solid state directly to gaseous state called?

A) Evaporation B) Condensation
C) Sublimation D) Distillation
 
Answer & Explanation Answer: C) Sublimation

Explanation:
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Q:

A ball rolling along the ground gradually slows down and finally comes to rest is due to ________.

A) Friction B) Magnetic force
C) Electrostatic force D) Muscular force
 
Answer & Explanation Answer: A) Friction

Explanation:
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Q:

The time taken by a pendulum to complete one oscillation is called its?

A) Maximum speed B) Average speed
C) Time period D) Time interval
 
Answer & Explanation Answer: C) Time period

Explanation:
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Q:

What kind of weather does a cold front usually bring

A) very hot B) heavy rain
C) cloudy D) normal
 
Answer & Explanation Answer: B) heavy rain

Explanation:

A cold front is defined as the transition zone where a cold air mass is replacing a warmer air mass. A cold front usually bring the temperature down by more than 15 deg and heavy rainfall with thundering and lighting.

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Q:

What are gilt-edged securities?

A) Securities issued by the multinational companies. B) Securities issued by the Government
C) Securities issued by the private sector D) Securities issued by the joint venture companies
 
Answer & Explanation Answer: B) Securities issued by the Government

Explanation:
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Q:

The absolute zero is a temperature at which _______

A) molecular motion in a gas would cease B) water freezes
C) all gases become liquid D) all gases become solid
 
Answer & Explanation Answer: A) molecular motion in a gas would cease

Explanation:
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Q:

Which of the following is used as non­ stick coating for cooking utensils?

A) Perspex B) Styrofoam
C) Polystyrene D) Teflon
 
Answer & Explanation Answer: D) Teflon

Explanation:
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Filed Under: Chemistry
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