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Assignment-Carbon & its compound (NTSE)

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Isomers have

a)

same structure and different formula

b)

different formula different structure

c)

same formula different structure

d)

same structure same formula

2.

General formula of Alkane is

a)

CnH2n+4

b)

CnH2n+2

c)

CnH2n

d)

CnH2n-2

3.

Hetero-atom in C6H1206

a)

Carbon

b)

Hydrogen

c)

Oxide

d)

Oxygen

4.

How many bonds will a C atom form?

a)

1

b)

2

c)

3

d)

4

5.

Which of the following is the molecular formula of cyclobutane?

a)

C4H10

b)

C4H6

c)

C4H8

d)

C4H4

6.

The property of self-linkage among identical atoms to form long chain compounds is known

a)

Superposition

b)

Catenation

c)

Isomerisation

d)

Halogenation

7.

Methane is a major constituent of_____

a)

CNG

b)

Bio-gas

c)

Natural Gas

d)

All the above

8.

Carbon is

a)

divalent

b)

trivalent

c)

tetravalent

d)

pentavalent

9.

Covalent compounds

a)

have high melting and boiling point

b)

are mostly soluble in water

c)

are formed between atoms of metals and non-metals

d)

are formed by the sharing of electrons in the bonding atoms.

10.

Which property of carbon is important in the forming of many types of organic compounds

a)

carbon has 6 electrons

b)

carbon has 6 protons

c)

carbon has 4 valence electrons

d)

carbon can only bond with hydrogen

11.

Which of the following is true for all hydrocarbon?

a)

They have carbon and hydrogen atoms only in the molecule.

b)

They have carbon, oxygen and hydrogen atoms in the molecule.

c)

They are in the same homologous series.

d)

They are saturated compounds.

12.

Which of the following is an alkane?

a)

C3H6

b)

C4H8

c)

C5H12

d)

C6H12

13.

Which of the following compound is saturated hydrocarbon?

I CH3CH2CH2CH3

II CH3CHC(CH3)2

III CH3CH2CH(CH3)2

IV CH3CHCHCH3

a)

I and III

b)

II and IV

c)

I, II and III

d)

I, III and IV

14.

Name this

a)

2-methylbutan-2-ol

b)

2-methylpropan-2-ol

c)

2-methylpropan-1-ol

d)

2-methylbutan-1-ol

15.

How many carbons are there in the longest chain?

a)

5

b)

3

c)

1

d)

6

16.

Which of the following is/are alkyne?

a)

C3H4

b)

C4H8

c)

C5H12

d)

C6H12

17.

Which of the following is the functional group of an alkene?

a)

C-C

b)

C=C

c)

-OH

d)

-COOH

18.

Alkanes are saturated hydrocarbons. What does this mean?

a)

There are some C=C double bonds present in the molecule

b)

All C atoms are bonded by single covalent bonds

c)

They are very reactive

d)

They have both double and single bond between carbons

19.

This is an example of a

a)

straight carbon chain

b)

branched carbon chain

c)

carbon ring structure

20.

Atomic No. of Carbon,No. of Electron,No. of Proton,No of electron is

a)

12

b)

7

c)

6

d)

4