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Q:

Which of the following are highly compressible?

A) Solid B) Liquid
C) Gas D) Solid and Liquid
 
Answer & Explanation Answer: C) Gas

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Q:

Which of the following represents an ion?

A) a particle having 9 protons, 9 neutrons, and 10 electrons B) a particle having 19 protons, 21 neutrons, and 19 electrons
C) a particle having 14 protons, 14 neutrons, and 14 electrons D) a particle having 1 proton, 3 neutrons, and 1 electron
 
Answer & Explanation Answer: A) a particle having 9 protons, 9 neutrons, and 10 electrons

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Q:

An element A forms an oxide with formula A3O4. What is the valency of element A?

A) 3 B) 2
C) 1 D) 4
 
Answer & Explanation Answer: D) 4

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Q:

Atomic number of which of the following elements is greater than that of Copper?

A) Iron B) Chromium
C) Zinc D) Manganese
 
Answer & Explanation Answer: C) Zinc

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Q:

According to Dalton’s Atomic Theory, the smallest indivisible particles of matter is called ______.

A) molecule B) atom
C) compound D) element
 
Answer & Explanation Answer: B) atom

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Q:

___________ gases absorb long wave (infrared) radiation from the earth and emit it again towards the earth.

A) Carbon dioxide B) Methane
C) Greenhouse D) Ozone
 
Answer & Explanation Answer: C) Greenhouse

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Q:

What is the base of the Octal Numeral System?

A) 8 B) 16
C) 32 D) 64
 
Answer & Explanation Answer: A) 8

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Q:

The common name of sodium tetraborate decahydrate is _____.

A) epsom salt B) gypsum
C) Borax D) galena
 
Answer & Explanation Answer: C) Borax

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