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Q:

Which one of the following oxides of Nitrogen is also known as Laughing Gas?

A) NO2 B) N2O5
C) NO D) N2O
 
Answer & Explanation Answer: D) N2O

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Q:

There are 15 protons and 22 neutrons in the nucleus of an element. What is its mass number?

A) 22 B) 7
C) 37 D) 15
 
Answer & Explanation Answer: C) 37

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Q:

What is C12H22O11 also known as

A) Sand B) Sugar
C) Salt D) Clay
 
Answer & Explanation Answer: B) Sugar

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Q:

What is the process of slow cooling of hot glass called?

A) Annealing B) Humidifying
C) Condensation D) Decantation
 
Answer & Explanation Answer: A) Annealing

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Q:

Pick the odd one out from the following:

A) NaOH B) Cu(OH)2
C) NH4OH D) Zn(OH)2
 
Answer & Explanation Answer: A) NaOH

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Q:

The maximum number of electrons that can be accommodated in a shell is indicated by the formula

A) 2n-2 B) 2n3
C) 2n D) 2n2
 
Answer & Explanation Answer: D) 2n2

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Q:

Researchers at the University of Illinois have discovered new form of matter called Excitonium which was coined by ______ in the 1960’

A) Bertrand Halperin B) Eugene Wigner
C) Paul Dirac D) Felix Bloch
 
Answer & Explanation Answer: A) Bertrand Halperin

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Q:

What is the Greenhouse Effect?

A) The fall in population of plants due to human activity B) It is the warming of earth's surface due to its atmosphere
C) The polluting effect of burning fossil fuels D) The heating of the atmosphere due to depletion of the ozone layer
 
Answer & Explanation Answer: B) It is the warming of earth's surface due to its atmosphere

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