PRACTICE TEST- 1-Class 10 - Science -Chemistry -Chapter 4

Class 10 -Carbon and Compounds- Chemistry Mock Test.

This Test Consist of 20 Questions

Total Time - 20 -Minutes

Covalent bonds are formed by the of electrons between two atoms so that both can achieve a
completely filled outermost shell.

The following chemical reaction shows the addition of chlorine gas to hydrocarbon in the presence of sunlight.

CHCl₃ + Cl₂ → CCl₄ + HCl

How does chlorine react to a hydrocarbon compound in the presence of sunlight?

It substitutes hydrogen atom from the compound

It breaks double and triple bonds into a single bond

It adds an oxygen atom to the compound

It adds hydrogen to the compound

None

Carbon is less reactive than

O 2,Cl2 etc. because:

it is a non-metal having low valency.

it is black.

none of the above

the covalent bonds between various carbon atoms are very strong.

None

Which of the following option explains the naming of ethane?

Carbon compound with a total number of eight atoms is named ethane

As it contains six hydrogen atoms, and a single bond connects the carbon and hydrogen atom

As it contains two carbon atoms, and a single bond connects the carbon atoms

The presence of a functional group connected with a single bond

None

In which of the following substances, carbon atoms are arranged in a regular tetrahedral structure?

Diamond

Benzene

Carbon black

Graphite

None

Which of the following statements are correct for carbon compounds?
(i) Most carbon compounds are good conductors of electricity.
(ii) Most carbon compounds are poor conductors of electricity.
(iii) Force of attraction between molecules of carbon compounds is not very strong.
(iv) Force of attraction between molecules of carbon compounds is very strong.

(ii) and (iv)

(ii) and (iii)

(i) and (iv)

(i) and (iii)

None

The following chemical reaction shows the addition of chlorine to methane in the presence of sunlight:

CH₄ + Cl₄ → X

What is likely to be the product of the reaction represented by “X”?

CH3Cl + HCl

CHCl3 + HCl

CH3Cl + H2SO4

CH4+ H2SO4

None

Which of the following statements are usually correct for carbon compounds? These

(i) are good conductors of electricity.

(ii) are poor conductors of electricity.

(iii) have strong forces of attraction between their molecules.

(iv) do not have strong forces of attraction between their molecules.

(i) and (iii)

(ii) and (iii)

(i) and (iv)

(ii) and (iv)

None

Name the type of reaction when ethanol is warmed with ethanoic acid to form ethyl acetate in the presence of concentrated H2SO4.

10.

The electronic configuration of an element is found to be 2, 4. How many bonds can one carbon atom form in a compound?

None

11.

The chemical reaction shows the addition of chlorine gas to hydrocarbon in the presence of sunlight.

CHCl₃ + Cl₂ → CCl₄ + HCl

How does chlorine react to a hydrocarbon compound in the presence of sunlight?

it breaks double and triple bonds into a single bond

it substitutes hydrogen atom from the compound

it adds hydrogen into the compound

it adds an oxygen atom into the compound

None

12.

Which of the following will give a pleasant smell of ester when heated with ethanol and a small quantity of sulphuric acid?

CH3OH

CH3CH2OH

CH3CHO

CH3COOH

None

13.

NaHCo3+CH3COOH⟶CH3COONa+CO2+H 2O,
This reaction is used as a test of carboxylic acid because :

gas is confirmed when it turns lime water milky

gas is confirmed when it turns lime water brown

gas is confirmed when it turns lime water light green

gas is confirmed when it turns lime water black

None

14.

In diamond, each carbon atom is bonded to four other carbon atoms to form

a hexagonal array

a structure of a ring

a structure in the shape of a football

a rigid three-dimensional structure

None

15.

Fullerene is an allotrope of carbon which is similar to a football. It has 60 carbon atoms joined together and no other element in it. There are various types of fullerenes. C60, C70, C74, and C75 are the members of the fullerene family. But C60

(pronounced as C sixty) is the most stable and most studied form of fullerenes. What do you think is the nature of the bond which is joining these atoms together?

Covalent

Iconic

Coordinate

Hydrogen

None

16.

Choose the correct statement.

In ethane, the two carbon atoms share one pair of electrons among themselves to form one carbon-carbon single covalent bond

Each carbon atom shares three electrons with three hydrogen atoms to form three carbon-hydrogen single covalent bonds

All th eoptions

The ethene molecule is made up of 2 carbon atoms and 4 hydrogen atoms

None

17.

While cooking ,if bottom of the vessel is getting blackened on the outside, it means that

The fuel is not burning properly

The fuel is wet

The fuel is burning completely

The food is not cooked properly

None

18.

The allotrope of carbon used in nuclear reactors is :

19.

Which of the following is a crystalline allotrope of carbon?

Charcoal

Lamp black

Fullerene

Coal

None

20.

Oils on treating with hydrogen in the presence of palladium or nickel catalyst forms fats. This is an example of

substitution reaction

addition reaction

oxidation reaction

displacement reaction

None

Chapter 1 - Chemical Reaction and Equation

chapter 2- Acids, Bases and Salt

Chapter 3 – Metals and Non-metals

Chapter 4 – Carbon and its Compounds

Assertion and Reason chemistry

CASE BASED QUESTIONS

Curriculum

Ncert-Class 10 Science - Chemistry

Chapter 1 - Chemical Reaction and Equation

chapter 2- Acids, Bases and Salt

Chapter 3 – Metals and Non-metals

Chapter 4 – Carbon and its Compounds

Assertion and Reason chemistry

CASE BASED QUESTIONS

PRACTICE TEST- 1-Class 10 – Science -Chemistry -Chapter 4 – Carbon and its Compounds