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Carbon And Its Compounds Mock Tests

29 questions available

Carbon And Its Compounds Mock Test 1

Questions: 29

नमूना प्रश्न

Class 10 Science
A element X reacts with oxygen to form an oxide X₂O which turns blue litmus paper red. The element X is most likely:
A Carbon
B Calcium
C Sodium
D Iron
Class 10 Science
Ethanol is heated with excess concentrated sulphuric acid at 443 K. What is the major product formed?
A Ethane
B Ethene
C Ethanal
D Ethoxyethane
Class 10 Science
Which of the following statements about ethanol is correct?
A Ethanol reacts with sodium to produce hydrogen gas
B Ethanol is a carboxylic acid
C Ethanol cannot be dehydrated
D Ethanol is a derivative of methane
Class 10 Science
When ethanoic acid reacts with sodium hydrogen carbonate, which of the following observations is correct?
A Brisk effervescence with the evolution of carbon dioxide gas
B No reaction occurs
C A yellow precipitate is formed
D The mixture turns blue litmus red without any gas evolution
Class 10 Science
The number of covalent bonds in the molecule of ethane (C₂H₆) is:
A 5
B 6
C 7
D 8
NDA General Test
Which of the following is the hardest natural substance on Earth?
A Gold
B Iron
C Diamond
D Platinum
NDA General Test
Which of the following is used as a lubricant in machines?
A Diamond
B Graphite
C Coal
D Charcoal
Class 10 Science
When ethanoic acid reacts with sodium bicarbonate, brisk effervescence is observed. The gas evolved is:
A Hydrogen
B Carbon dioxide
C Carbon monoxide
D Oxygen

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