Class -X Science

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Class X Science Quiz

Test your knowledge of chemistry and biology concepts with our engaging Class X Science Quiz! This quiz consists of 20 multiple-choice questions that challenge your understanding of essential scientific principles.

Are you ready to prove your expertise? Here are some highlights:

Covering key topics in chemistry and biology
Designed for Class X students
Instant feedback on your answers

20 Questions5 MinutesCreated by LearningLeaf321

2.Which is true for an oxidation reaction ?

A. Addition of oxygen

B. Removal of oxygen

C. Removal of hydrogen molecule

D.Addition of hydrogen atom

3. Identify the double displacement reaction.

Hydrogen burns in air

Electrolysis of water

Digestion of food

Reaction between barium chloride and sulphuric acid

4.On heating copper powder in air, the surface of copper becomes black. It is

Combination reaction

Decomposition reaction

Dissociation reaction

Displacement reaction

5.Which of the following observation helps us to determine that a chemical change has taken place ?

Evolution of a gas

Change in color

Change in temperature

All of these

6.Which of the following is an endothermic process ?

Dilution of sulphuric acid

Burning of methane

Evaporation of water

Condensation of water vapours

8. What is the amount of current flowing through an electric press, if the amount of charge passing through a conductor in 10 minutes is 300 C?

30 A

0.3 A

0.5 A

5 A

9. An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:

0.92 A

2.9 A

92 A

9.2 A

10. Keeping the potential difference constant, the resistance of the circuit is halved. The current will become:

One-fourth

Four times

Half

Doubled

11. Two appliances of rating 200 watt-250 volts and 100 watt-250 volts are joined in series to a 250 volts supply. Total power consumed in the circuit is

46 watt

67 watt

10 watt

30 watt

12. If the current flowing through a fixed resistor is halved, the heat produced in it will become:

One-fourth

Half

Doubled

Four times

13. A wire is stretched to double its length. What will be the the resistivity of the new wire?

Half

Double

One fourth

Remains same

15. Which organ secrets a chemical compound , which emulsifies fats and makes the food alkaline?

Liver

Pancreas

Stomach

Small intestine

19. After strenuous exercise , what helps to repay the body's oxygen debt?

Eating

Stretching

Breathing

Thinking

Class -X Science

Class X Science Quiz

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