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Class 10th science quiz contest of 2025

Time: 30 Minutes for 20 Question.

Class 10th Science Monthly Quiz Challenge

The number of attempts remaining is 1

1 / 20

1. The male reproductive parts of a flower, the stamens, are collectively known as

Androecium

Filament

Anther

Gynoecium

2 / 20

2. Which of the following is the most reactive element of group 17?

Oxygen

Sodium

Fluorine

Magnesium

3 / 20

3. What is the relationship between resistance and current?

They are directly related to each other

They are inversely related to each other

The resistance has a greater magnitude than the current

The current has a greater magnitude than the resistance

4 / 20

4. The manufacturing of Chlorofluorocarbons free refrigerators is mandatory throughout the world. How does this help prevent ozone depletion?

This will help convert oxygen molecules into ozone

This will help convert the CFCs into ozone molecules

This will reduce the production of CFCs from oxygen molecules

This will reduce the release of CFCs that reacts with ozone molecules

5 / 20

5. What is the other name for group 18th elements?

Noble gases

Alkali metals

Alkali earth metals

Halogens

6 / 20

6. IUCD is for

Vegetative propagation

Contraception

Increasing fertility

Avoiding miscarriage

7 / 20

7. Fruits are formed from the

Stamen

Stigma

Ovary

Ovule

8 / 20

8. The amount of energy that flows from one trophic level to another in a food chain is

10%

20%

15%

9 / 20

9. Which of the following forms the basis of the modern periodic table?

Atomic mass

Atomic number

Number of nucleons

All of the above

10 / 20

10. Which Acid is present in Tomato?

Citric Acid

Oxalic Acid

Lactic Acid

HCl

11 / 20

11. The decomposers in an ecosystem:

Convert organic material to inorganic forms

Convert inorganic material to simpler forms

Convert inorganic material into the organic compound

Do not break down the organic compound

12 / 20

12. What is the chemical formula of POP (Plaster of Paris)?

CaSO4.2H2O

CaSO4.3H2O

CaSO4.1/2H2O

CaCO3.1/2H2

13 / 20

13. Which of the following diseases is transmitted sexually?

Kala Azar

Jaundice

Cholera

Syphilis

14 / 20

14. At what temperature is gypsum heated to form Plaster of Paris?

35°C

70°C

80°C

100°C

15 / 20

15. Unit of electric power may also be expressed as

Volt-ampere

Kilowatt-hour

Watt second

Joule second

16 / 20

16. What happens to the electropositive character of elements on moving from left to right in a periodic table?

Increase

Decreases

First increases, then decreases

First decreases, then increases

17 / 20

17. The primary consumers are

Carnivores

Herbivores

Omnivores

Producers

18 / 20

18. When a base reacts with a metal, it forms a salt, and hydrogen gas is released. By what method can the presence of hydrogen be detected?

by water

by litmus paper

by methyl orange

by a burning candle

19 / 20

19. Which group elements are called transition metals?

Group number 1 to 2

Group number 13 to 18

Group number 3 to 12

Group number 1 to 8

20 / 20

20. pH value less than 7 indicates that the solution is –

Acidic

Basic

Neutral

No effect

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Class 10th science quiz contest of 2025

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