1 |
Natural gas is 85% methane, It is used to make the follwing except. |
Carbon black
Ethane
Propane
Both b and c
|
2 |
Pitch is black residue of |
Coke
Coal-tar
Coal
Coal gas
|
3 |
The strone heating of coal in retorts in the absence of air is called. |
Fractional distillation
sublimation
Roasting
Destructive distillation
|
4 |
Main component of natural gas is |
Methane
Propane
Butane
Propene
|
5 |
Coal having 90% carbon contents is called. |
Peat
Lignite
anthracite
bituminous
|
6 |
The ability of carbon atoms to form chains is called. |
Isomerism
Catenation
Resonance
Condensation
|
7 |
Which is used for cleaning agent for domestic and commercial purpose? |
NaCl
Na<sub>2</sub>CO<sub>3</sub>
NaHCO<sub>3</sub>
Na<sub>2</sub>SiO<sub>3</sub>
|
8 |
Which salt is used for the manufacture of detergents, pulp and paper? |
NaCl
Na<sub>2</sub>CO<sub>3</sub>
Na<sub>2</sub>SiO<sub>3</sub>
NaCl
|
9 |
Which salt is used as a table salt? |
NaCl
Na<sub>2</sub>CO<sub>3</sub>
Na<sub>2</sub>SiO<sub>3</sub>
NaCl
|
10 |
Methyl orange produces which colour in basic solution |
Red
Yellow
Pink
White
|
11 |
Phenolphthalein produces red colour in |
Acid
Base
Both a and b
None of these
|
12 |
Indicators are the |
Inorganic compounds
Organic compounds
Ionic compounds
Covalent compounds
|