oly class-8 science set-1 – The Smart Visions

Created on June 01, 2025

Olympiad Class-8 Science Set-1

NameEmailPhone NumberSelect Level / Class

1 / 25

Consider the following statements about
weeding and identify the incorrect one.

A) Weeding is usually done manually or by using weedicides.

B) Weeding is the process of removal of weeds.

C) Weeding is the process of growing weed.

D) Weeding is best done during tilling itself.

2 / 25

Which of the following tool helps in the
uniform distribution of seeds while sowing?

A) Sprinkler

B) Seed drill

C) Thresher

D) Funnel connected to pipes

3 / 25

Rhizobium bacteria in the root nodules of
leguminous plants help in fixing:

A) Nitrogen

B) Sulphur

C) Hydrogen

D) Oxygen

4 / 25

Weeds are controlled by chemicals called
_________.

A) Weedicides

B) Insecticides

C) Pesticides

D) Fungicides

5 / 25

What are the advantages of preparing the
soil?

A) Makes decomposition by microbes easier.

B) All of these

C) Makes the top soil nutrient rich.

D) Allows roots to penetrate the soil easily

6 / 25

What is the term for the process of planting
seeds at the depth?

A) Irrigation

B) Sowing

C) Thinning

D) Planting

7 / 25

What is the process of preparing the soil for
planting called?

A) Sowing

B) Planting

C) Tillage

D) Irrigation

8 / 25

Which of the following animal is taken care
of in animal husbandry?

A) Tiger

B) Lion

C) Buffalo

D) Rhino

9 / 25

Which of the following should be used by a
farmer with a large farm to harvest his crops quickly and efficiently?

A) Seed drill

B) Sickle

C) Winnowing machine

D) Combine

10 / 25

If you were a farmer, which of the following methods would you use to separate good quality and viable grains from a heap of grains after harvest?

A) Checking grains under sunlight for pores.

B) Sowing seeds and waiting for germination.

C) Checking the weight of grains

D) Immersing the grains in water

11 / 25

What is the primary goal of crop
production?

A) To ensure crop rotation

B) To produce a variety of crops

C) To reduce crop waste

D) To increase crop yield

12 / 25

Arrange the following agricultural practices
in the order in which they are followed.
1. Harvesting
2. Sowing
3. Storage
4. Irrigation
5. Preparation of soil

A) 5→3→4→1→2

B) 2→1→3→5→4

C) 1→2→3→4→5

D) 5→2→4→1→3

13 / 25

The process of loosening and turning the soil is known as:

A) Threshing

B) Winnowing

C) Ploughing

D) Harvesting

14 / 25

The process of drying wheat stalks in the
sun and then beating them to separate the
grains is called

A) Churning

B) Sieving

C) Winnowing

D) Threshing

15 / 25

In today’s world, where water is a scarce
resource, which of the following irrigation
methods is most feasible and sustainable?

A) Drip system

B) Sprinkler system

C) Tube well

D) Chain pump

16 / 25

Organic wastes can be decomposed to
form ________, which can sustainably
enhance the nutrient content of the soil.

A) Compost

B) Fertiliser

C) Pesticide

D) Cow dung

17 / 25

Select the method(s) of irrigation which can
be employed on uneven land.
(I) Moat
(ii) Sprinkler
(iii) Chain Pump
(iv) Drip System

A) (i) and (ii)

B) (ii) and (iv)

C) (I), (ii) and (iii)

D) Only (iv)

18 / 25

Identify the agricultural method in which
different crops are grown on a piece of land
season after season.

A) Crop rotation

B) Shifting cultivation

C) Irrigation

D) Monoculture

19 / 25

Which of the following is used to preserve
food grains at home?

A) Curry leaves

B) Neem leaves

C) Tulsi leaves

D) Spinach leaves

20 / 25

Which of the following is not a traditional
irrigation method?

A) Drip system

B) Lever system

C) Chain pump

D) Moat

21 / 25

What are the important steps in the
preparation of soil?

A) Loosening and weeding

B) Loosening and sowing

C) Turning and sowing

D) Turning and loosening

22 / 25

Which of the following is a rabi crop?

A) Mustard

B) Rice

C) Maize

D) Soyabean

23 / 25

Which type of irrigation is similar to rainfall?

A) Rahat

B) Drip system

C) Moat

D) Sprinkler system

24 / 25

Which crop requires the most water?

A) Wheat

B) Sugarcane

C) Maize

D) Rice

25 / 25

Which of the following is a type of crop
production?

A) Livestock farming

B) Aquaculture

C) All of these

D) Horticulture

Your score is