Carbon and its Compounds
Which of the following class of organic compound does not contain (C = O) group in some form ?
(1) Aldehydes
(2) Ethers
(3) Carboxylic acids
(4) Esters
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Carbon and its Compounds
The action of cleaning of oily dirt by soap is based on .......
(1) solubility in water
(2) hydrophilic property
(3) hydrophobic property
(4) presence of both hydrophilic and hydrophobic groups
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Carbon and its Compounds
Coal is called fossil fuel because :
(1) In future coal will become completely exhausted
(2) It was formed 300 million years ago
(3) Fossils are obtained along with mining of coal
(4) It was formed from the dead remains of living organisms
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Carbon and its Compounds
Which compound is used to make a soap antiseptic ?
(1) glycerol
(2) sulphonic acid
(3) bithional
(4) glycerine
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Carbon and its Compounds
The allotrope of carbon in amorphous form among the following is .......
(1) Diamond
(2) Graphite
(3) Buckministerfullerene
(4) Coal
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Carbon and its Compounds
A strip of copper is placed in four different colourless salt solution. The salt solutions are NaNO3, Zn(NO3)2 , Mg(NO3)2, , AgNO3 Which one of the solution will finally turn blue
(1) AgNO3
(2) Zn(NO3)2
(3) Mg(NO3)2
(4) NaNO3
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Carbon and its Compounds
Soaps are used to clean clothes. Which one is correct statement in this respect?
(1) Soap is a sodium salt of an aromatic acid
(2) During cleaning micelles are formed
(3) Using soap hard water cannot be distinguished
(4) Soap can be used in hard water for bett er cleaning of clothes
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Carbon and its Compounds
An organic compound which is used to preserve biological specimen is
(1) ether
(2) methanal
(3) ethanal
(4) ethanol
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Carbon and its Compounds
Which of the following hydrocarbons have acidic hydrogen?
(1) CH2=CH2
(2) 
(3) CH4
(4) C6H6
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Carbon and its Compounds
The gaseous hydrocarbon acetylene, C2H2 used in welder's torches, releases 1300 kJ. When 1 mole of C2H2 undergoes combustion, then which of the following is not TRUE ?
(1) Combustion of acetylene is an exothermic reaction
(2) The balanced chemical reaction of combustion of acetylene is : C2H2 + 5O2 - > 2CO2 + H2O
(3) 2 moles of water produced when 2 moles of acet ylene react s.
(4) 44 g of CO2 produced when 13 g of acetylene reacts.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
