Q:

Which of the following cannot be used for making lenses?

A) Plastic	B) Soil
C) Glass	D) Water

Answer & Explanation Answer: B) Soil

Explanation:

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Q:

Find the work done (in J) when a charge of 10 C moves across a potential difference of 2 V.

A) 20	B) 5
C) 40	D) 10

Answer & Explanation Answer: A) 20

Explanation:

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Q:

Name the elements that determine the weather of a place.

A) Humidity	B) Temperature
C) Rainfall	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

The elements that determine the weather of a place are temperature, humidity, rainfall and wind.

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Q:

The HIV virus weakens the immunity of a person because it destroys

A) mast cells	B) platelets
C) erythrocytes	D) lymphocytes

Answer & Explanation Answer: D) lymphocytes

Explanation:

The HIV virus continuously invades and destroys T-cells (lymphocytes). Eventually the body can't replace the T-cells fast enough, and the immune system deteriorates. When the immune system has deteriorated to the point that it is unable to fight off diseases, a person is diagnosed with AIDS.

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Q:

Assembly is a _______ based low-level language replacing binary machine-code instructions, which are very hard toremember, it is the classic and uncontroversial example of alow level language.

A) Memory	B) High Level
C) Key	D) Mnemonic

Answer & Explanation Answer: D) Mnemonic

Explanation:

Assembly language is mnemonic based low levellanguage. Mnemonics are short codes of assemblylanguage which chosen to remind the programmer ofthe instructions of binary machine-code which areapparently which are very hard to remember, writedown, or correct.

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Q:

Weight of a body is maximum at the:

A) Equator	B) Pole
C) Subtropics	D) Tropics

Answer & Explanation Answer: B) Pole

Explanation:

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Q:

Which property of metals enables production of metallic foils?

A) Malleability	B) Ductility
C) Sonority	D) Conductivity

Answer & Explanation Answer: A) Malleability

Explanation:

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Q:

The value of acceleration due to gravity (g) at a distance of 2R from the surface of earth, where R is the radius of earth is ______.

A) g/3	B) g/4
C) g/9	D) g/2

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