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Q:

The percentage of carbon in CO2 is

A) 12 B) 44
C) 14 D) 27.3
 
Answer & Explanation Answer: D) 27.3

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Q:

What is the other name of sodium carbonate?

A) Baking soda B) Washing soda
C) Baking powder D) No option is correct
 
Answer & Explanation Answer: B) Washing soda

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Q:

How are elements arranged in the Modern Periodic Table?

A) In the increasing order of their Molecular Mass B) In the increasing order of their Atomic Mass
C) In the increasing order of their Atomic Number D) In the increasing order of their Mass Number
 
Answer & Explanation Answer: B) In the increasing order of their Atomic Mass

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Q:

Which of the following metals cannot be easily cut with a knife?

A) Sodium B) Aluminium
C) Lithium D) Potassium
 
Answer & Explanation Answer: B) Aluminium

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Q:

What is the pH value of human blood?

A) 8.3 B) 6.8
C) 7.4 D) 6
 
Answer & Explanation Answer: C) 7.4

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Q:

The metal that can be cut with a knife is

A) Sodium B) Iron
C) Aluminium D) Copper
 
Answer & Explanation Answer: A) Sodium

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Q:

Which of the following metals is the most Malleable?

A) Al B) Zn
C) Na D) Ag
 
Answer & Explanation Answer: C) Na

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Q:

Atomic mass of Nitrogen is 14 and that of Hydrogen is 1. What will be the molecular mass of Ammonia?

A) 18 B) 17
C) 16 D) 15
 
Answer & Explanation Answer: B) 17

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