Question 1

What is the oxidation number of carbon in carbon(iv) oxide

Accepted Answer

+4

Answer

+2

Answer

-4

Answer

-6

Question 2

The main product of acid base reaction is __

Accepted Answer

Salt and water

Answer

Oxygen and hydrogen

Answer

Carbon dioxide and salt

Answer

Water only

Question 3

What is salt?

Accepted Answer

Salt is a compound formed when all or part of the ionizable hydrogen ion of a compound is replaced by a metal

Question 4

Which of the following is not a normal salt

Accepted Answer

Na(H)CO3

Answer

BaCl

Answer

NaCl

Answer

Na2CO3

Question 5

the allotropes of carbon that is use for lead pencil production i

Accepted Answer

Graphte

Answer

Fulerene

Answer

Charcoal

Answer

Diamond

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