CBSE Questions for Class 10 Chemistry Carbon And Its Compounds Quiz 10 - MCQExams.com

Ethane with the molecular formula $$ C_{2}H_{6} $$ has :
  •  6 covalent bonds
  • 7 covalent bonds
  • 8 covalent bonds
  • 9 covalent bonds
Which among the following are unsaturated hydrocarbons?
1791349_8cf7e4f92c21400aa773c8c1e40841fe.png
  • (i) and (iii)
  • (ii) and (iii)
  • (ii) and (iv)
  • (iii) and (iv)
State whether the following statement is True or False:
Carbon forms innumerable compounds by combining with other elements.
  • True
  • False
Ethanol reacts with sodium and forms two products. These are
  • sodium ethanoate and hydrogen
  • sodium ethanoate and oxygen
  • sodium ethoxide and hydrogen
  • sodium ethoxide and oxygen
While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:
  • the food is not cooked completely.
  • the fuel is not burning completely.
  • the fuel is wet.
  • the fuel is burning completely.
How many elements of unsaturation does a molecule with the chemical formula $$C_5H_8$$ have?
  • 4
  • 3
  • 2
  • 1
  • 5
Which gas is produced when compound $$X$$ reacts with washing soda?
  • Hydrogen
  • Oxygen
  • Methane
  • Carbon dioxide
An organic compound 'A' produces a gas with brisk effervescence when sodium bicarbonate is added to it. The compound 'A' contains the same number of carbons as in ethane. The compound 'A' reacts with ethanol to form a sweet-smelling compound 'C' in presence of conc. $$H_2SO_4$$ acid. Then the name of compound A and the gas evolved is :
  • ethanoic acid; $$CO_2$$
  • methanoic acid; $$CO_2$$
  • ethanoic acid; $$H_2$$
  • methanoic acid; $$H_2$$
Which of the following statement(s) is/are correct?
(1) Graphite is used in making electrodes because it can conduct electricity.
(2) Graphite is used as a solid lubricant.
(3) Graphite is used in the manufacture of crucibles.
(4) Graphite is also known as the black lead.
  • 1 and 4
  • 2 and 3
  • 1 and 2
  • All of them
Assertion: When a hydrocarbon is combusted in air, carbon monoxide is always the major product.
Reason: Air contains much more nitrogen than oxygen.

  • Assertion and reason both are correct statements and reason is the correct explanation for assertion.

  • Assertion and reason both are correct statements but the reason is not the correct explanation for assertion.

  • Assertion is a correct statement but the reason is the wrong statement.

  • Assertion is a wrong statement but the reason is a correct statement. 

  • Assertion and reason both are wrong statements

Which of the following represents saponification reaction?
  • $$CH_{3}COONa + NaOH \xrightarrow{CaO} CH_{4} + Na_{2}CO_{3}$$
  • $$CH_{3}COOH + C_{2}H_{5}OH \xrightarrow{H_{2}SO_{4}} CH_{3} COOC_{2}H_{5} +H_{2}O$$
  • $$2CH_{3}COOH + 2Na \rightarrow 2CH_{3} COONa + H_{2}$$
  • $$CH_{3}COOC_{2}H_{5} + NaOH \rightarrow CH_{3} COONa + C_{2} H_{5}OH$$
An organic compound 'A' produces a gas with brisk effervescence when sodium bicarbonate is added to it. The compound 'A' contains same number of carbons as in ethane. The compound 'A' reacts with ethanol to form a sweet smelling compound 'C' in presence of conc. $$H_2SO_4$$. A and C respectively are :
  • ethanoic acid and ethyl ethanoate
  • methanoic acid and ethyl methanoate
  • ethanoic acid and sodium ethanoate
  • methanoic acid and sodium methanoate
Name the process for ethanol to ethene conversion and reactants used.
  • hydrogenation of ethanol in the presence of concentrated $$H_{2}SO_{4}.$$
  • dehydration of ethanol in the presence of concentrated $$H_{2}SO_{4}.$$
  • oxidation of ethanol in the presence of concentrated $$H_{2}SO_{4}.$$
  • reduction of ethanol in the presence of concentrated $$H_{2}SO_{4}.$$
Heats of combustion of $$CH_4, C_2H_4, C_2H_6 $$ are -890, -1411 and -1560 kJ/mole respectively. Which has the lowest fuel value in kJ/g?
  • $$CH_4$$
  • $$C_2H_4$$
  • $$C_2H_6$$
  • All same
Which one is not a glyceride?
  • Fat
  • Oil
  • Phospholipid
  • Soap
The number of carbon compounds is very large because:
  • carbon is tetra-valent
  • it has non- metallic character
  • it shows allotropy
  • it has strong catenation property.
Which are characteristic of carbon?
  • It has a number of allotropes
  • Largest number of compound
  • Most abundant element
  • Multiple bond formation
Correct statement regarding $$C_{60}$$ is 
  • 12 hexagonal ring, 20 pentagonal ring
  • 12 pentagonal ring, 20 hexagonal ring
  • 10 hexagonal ring, 12 pentagonal ring
  • 5 hexagonal ring, 6 pentagonal ring
An alkali salt of carboxylic acid is known as:-
  • alkaloid
  • an ester
  • a soap
  • an epoxide
In which of the following substances ethanol is used?
  • Carbonated beverages
  • Cough mixture
  • Candle
  • LPG
The number of C-atoms in second member of an ester is:
  • 2
  • 3
  • 4
  • 5
Which of the following is pair of homologues?
  • $${\text{C}}{{\text{H}}_{\text{3}}}{\text{OH,}}\,{\text{C}}{{\text{H}}_{\text{3}}} - {\text{O}} - {\text{C}}{{\text{H}}_3}$$
  • $${\text{C}}{{\text{H}}_{\text{3}}}{\text{OH,}}\,{\text{C}}{{\text{H}}_{\text{3}}}{\text{SH}}$$
  • $${\text{C}}{{\text{H}}_{\text{3}}} - {\text{O}} - {\text{C}}{{\text{H}}_{\text{3}}},{\text{C}}{{\text{H}}_{\text{3}}} - {\text{C}}{{\text{H}}_{\text{2}}} - {\text{OH}}$$
  • $${\text{C}}{{\text{H}}_{\text{3}}}{\text{OH,}}\,{\text{C}}{{\text{H}}_3}{\text{C}}{{\text{H}}_2}{\text{OH}}$$
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Class 10 Chemistry Quiz Questions and Answers