Free Printable class 10 complete science Quizz

1.

When crystals of lead nitrate are heated strongly in a dry test tube

a)

(a) crystals immediately melt

b)

(b) a brown residue is left

c)

(c) white fumes appear in the test tube

d)

(d) a yellow residue is left

2.

A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation? [NCERT Exemplar]

a)

(a) KMnO4 is an oxidising agent, it oxidises FeSO4

b)

(b) FeSO4 acts as an oxidising agent and oxidises KMnO4

c)

(c) The colour disappears due to dilution, no reaction is involved

d)

(d) KMnO4 is an unstable compound and decomposes in the presence of FeSO4 to a colourless compound

3.

A solution reacts with crushed-egg shells to give a gas that turns lime water milky. The solution contains

a)

(a) NaCl

b)

(b) HCl

c)

(c) LiCl

d)

(d) KCl

4.

10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HC1. If we take 20 mL of the same solution of NaOH, the amount of HC1 solution (the same solution as before) required to neutralise it will be

a)

(a) 4 mL

b)

(b) 8 mL

c)

(c) 12 mL

d)

(d) 16 mL

5.

Which of the following pairs will give displacement reactions ?

a)

(a) NaCl solution and copper metal.

b)

(b) MgCl2 solution and aluminium metal.

c)

(c) FeSO4 solution and silver metal.

d)

(d) AgNO3 solution and copper metal.

6.

Buckminster fullerene is an allotropic form of [NCERT Exemplar]

a)

(a) phosphorus

b)

(b) sulphur

c)

(c) carbon

d)

(d) tin

7.

The hetero atoms present in

CH3 – CH2 – O – CH2 – CH2Cl are [NCERT Exemplar]

(i) oxygen

(ii) carbon

(iii) hydrogen

(iv) chlorine

a)

(a) (i) and (ii)

b)

(b) (ii) and (iii)

c)

(c) (iii) and (iv)

d)

(d) (i) and (iv)

8.

Which of the following statements is not a correct statement about the trends wlien going from left to right across the periods of Periodic Table.

a)

(a) The elements become less metallic in nature.

b)

(b) The number of valence electrons increases.

c)

(c) The atoms lose their electrons more easily.

d)

(d) The oxides become more acidic.

9.

The xylem in plants are responsible for

a)

(i) transport of water

b)

(ii) transport of food

c)

(iii) transport of amino acids

d)

(iv) transport of oxygen

10.

Offsprings formed by asexual method of reproduction have greater similarity among themselves because [NCERT Exemplar]

I. asexual reproduction involves only one parent.

II. asexual reproduction does not involve gametes.

III. asexual reproduction occurs before sexual reproduction.

IV. asexual reproduction occurs after sexual reproduction.

a)

(a) I and II

b)

(b) I and III

c)

(c) II and IV

d)

(d) III and IV

11.

Two flowers are identified by a botanist with the following features that flower A is having only stamen and flower B is having both stamen and pistil. Which of the following statements is correct?

a)

(a) Flower A will bear seeds and flower B cannot bear seeds after fertilisation.

b)

(b) Flower A will produce pollen grains and flower B cannot produce pollen grains.

c)

(c) Flower A cannot be fertilised and flower B can show fertilisation.

d)

(d) Neither flower A and nor flower B can show self-pollination.

12.

The science, which deals with study of heredity and variations is called

a)

(a) phylogeny

b)

(b) embryology

c)

(c) genetics

d)

(d) palaeontology

13.

New species may be formed if

I. DNA undergoes significant changes in germ cells. .

II. chromosome number changes in the gamete.

III. there is no change in the genetic material.

IV. mating does not take place.

a)

(a) I and II

b)

(b) I and III

c)

(c) II, III and IV

d)

(d) I, II and III

14.

Select the statement that describes characteristics of genes. .

a)

(a) Genes are specific sequence of bases in a DNA molecule.

b)

(b) A gene does not code for proteins.

c)

(c) In individuals of a given species, a specific gene is located on a particular chromosome.

d)

(d) Each chromosome has only one gene.

15.

An object AB is placed in front of a convex lens at its centre of curvature as shown in figure below.

Four students traced the path of light ray after refraction through the lens. Which one of them is correct?

a)

b)

(a) Only I

c)

(b) Only II

d)

(c) Only III

e)

(d) Only IV

16.

A spherical mirror and a thin spherical lens have each of a focal length -15 cm. The mirror and lens are likely to be [NCERT]

a)

(a) both concave

b)

(b) botbh convex

c)

(c) mirror is concave and lens is convex

d)

(d) mirror is convex and lens is concave

17.

Question 2.

For the given circuit, name the components which are connected in parallel. [CCE 2011]

a)

(a) R1 and R2

b)

(b) R1, R2 and V

c)

(c) R2 and V

d)

(d) R1 and V

18.

An ammeter has 20 divisions between 0 mark and 2A mark on its scale. The least count of ammeter is

a)

(a) 0.01A

b)

(b) 0.2A

c)

(c) 0.1A

d)

(d) 1A

19.

A bar magnet is broken into three parts X, Y and Z.

Which diagram show the poles in X, Y and Z?

a)

b)

A

c)

B

d)

C

e)

D

20.

Which of the following pairs will give displacement reactions ?

a)

(a) NaCl solution and copper metal.

b)

(b) MgCl2 solution and aluminium metal.

c)

(c) FeSO4 solution and silver metal.

d)

(d) AgNO3 solution and copper metal.

class 10 complete science Quizz

Total questions: 20

Worksheet time: 10mins

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