Carbon and Its Compounds

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Question

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Question 1 :

More compounds of ........... exist than any other chemical element.

1. carbon
2. hydrogen
3. oxygen
4. none of the above
Answer
15334

Question 2 :

Carbon compounds are ............

1. inorganic compounds
2. organic compounds
3. both (a) and (b) above
Answer
15335

Question 3 :

The valency of an atom is equal to the number of electrons in the outer shell.  This sentence is ...... .

1. true
2. true, if that number is four or less.
3. true, if that number is eight or less.
4. false
Answer
15336

Question 4 :

The valency is equal to ...........
 

1. the number of electrons in the outer shell if that number is eight.
2. eight plus the number of electrons in the outer shell.
3. eight minus the number of electrons in the outer shell.
4. both (a) and (b)
Answer
15337

Question 5 :

An atom has 4 electrons in the outer shell.  Its valency is .......... .

1. 1
2. 2
3. 4
4. 5
Answer
15338