Download PDF – general science aptitude test | Science MCQ Quiz with Explained Answers

general science aptitude test | Science MCQ Quiz with Explained Answers

Q1. In the visible spectrum the color having the shortest wavelength is :

A) Violet

B) Blue

C) Red

D) yellow

Answer: (A)

the longest wavelength is Red, and the shortest is violet.

Q2. The Heater Element in an electric iron is made of__

A) Copper

B) Tungesten

C) Nichrome

D) Iron

Answer: (C)

Nichrome 80/20 is an ideal material, because it has relatively high resistance and forms an adherent layer of chromium oxide when it is heated for the first time.

Q3. Which of following is the most viscous medium?

A) Coaltar

B) Water

C) Glycerine

D) Alcohol

Answer: (A)

Q4. At which temperature do the reading of the centigrade and the fahrenheit scales coincide?

A) 0⁰

B) -40⁰

C) 100⁰

D) -80⁰

Answer: (B)

Q5. Sound travels fastest in :

A) Water

B) Steel

C) Alcohol

D) Air

Answer: (B)

Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air.

Q6. Which of the following is the property of Carbon Monoxide:

A) Oxidising Agent

B) Catalytic agent

C) Neutral oxide

D) Reducing agent

Answer: (D)

Carbon monoxide is a colorless, odorless, and tasteless flammable gas that is slightly less dense than air.

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