# Science Practice Set

Subject matter experts of JagranJosh have developed an practice set on Science CBSE class 10th. This practice set contains 24 questions.In this practice set you will get multiple choice questions from all the topics of Science class 10th.

• ## Question 1

Which of the following statements is correct about an aqueous solution of an acid and a base?
i. Higher the pH, stronger the acid
ii. Higher the pH, weaker the acid
iii. Lower the pH, stronger the base
iv. Lower the pH, weaker the base
• ## Question 2

A liquid turns red litmus to blue. The pH of the liquid will be
• ## Question 3

In which one of the following solutions the bulb will not glow when electric current passed through it?
• ## Question 4

Equal volumes of hydrochloric acid and sodium hydroxide solutions of same concentration are mixed and the pH of the resulting solution is checked with the help of a pH paper. What would be the colour obtained? (You may use colour guide given in the given figure)
• ## Question 5

In the following reaction, identify the salt formed
• ## Question 6

Which one is a double displacement reaction?
• ## Question 7

Calcium oxide (CaO) reaction with water is regarded as exothermic. A student mixes these two products in a test tube and touches its side surface. Which of the following statement correctly describes the student’s observation?
• ## Question 8

What are the coefficients of the correctly balanced equations?
• ## Question 9

The main function of the plant hormone called abscisic acid is to:
• ## Question 10

A big tree falls in a forest, but its roots are still in contact with the soil. The branches of this fallen tree grow straight up (vertically). This happens in response to:
• ## Question 11

The movement of a plant part in response to the force of attraction exerted by the earth is called:
• ## Question 12

The sequence of gradual changes which takes place in the primitive organisms over millions of years in which new species are produced is known as
• ## Question 13

In the human blood grouping, the four basic blood types are type A, type B, type AB, and type O. The blood proteins A and B are:
• ## Question 14

If a normal cell of human body contains 23 pairs of chromosomes then the numbers of chromosomes in a sex cell of a human being is most likely to be:
• ## Question 15

Presence of large number of spores in air
Presence of large number of thread-like branched hyphae
Presence of moisture and nutrients
Formation of round shaped sporangia
• ## Question 16

Which among the following does not reproduce by spore formation:
• ## Question 17

Which among the following is a unicellular organism that reproduces by budding:
• ## Question 18

Among the following choose the correct option which includes the organisms that have a holozoic mode of nutrition:
• ## Question 19

The enzymes pepsin and trypsin are secreted respectively by
• ## Question 20

Which of the following is not a digestive enzyme contained in the pancreatic juice?
Lipase
Hydrochloric acid
Mucus
Trypsin
• ## Question 21

The sulphide ores are converted into oxides by heating strongly in the presence of excess air. This process is known as
• ## Question 22

The metal which is liquid at room temperature is
• ## Question 23

Bauxite is an ore of
• ## Question 24

The number of proton in an atom of an element A is 19 then, the number of electron in its ion A+ is:
• ## Question 25

The non-metal which is liquid at room temperature is: