CBSE Class-8 Science: Questions 1 - 9 of 469

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 469 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 300.00 or

Question number: 1

» Microorganisms: Friend and Foe » Harmful Microorganisms » Disease Causing Microorganisms in Humans

MCQ▾

Question

Micro-organisms which causing diseases in human beings are:

Choices

Choice (4) Response
a.

Algae

b.

Virus

c.

Bacteria, Protozoa

d. Both b. and c. are correct

Question number: 2

» Microorganisms: Friend and Foe » Microorganisms » Bacteria and Fungi

MCQ▾

Question

Fungi helps in the fermentation is

Choices

Choice (4) Response
a.

Mildews

b.

Moulds

c.

Yeast

d.

Mushrooms

Question number: 3

» Crop Production and Management » Irrigation » Traditional Methods of Irrigation

MCQ▾

Question

In which method irrigation manual or human/cattle labour is used

Choices

Choice (4) Response
a.

Modern method

b.

Traditional method

c. Question does not provide sufficient data or is vague
d. None of the above

Question number: 4

» Microorganisms: Friend and Foe » Microorganisms » Bacteria and Fungi

MCQ▾

Question

Medicines obtained from the fungus is

Choices

Choice (4) Response
a.

Antibiotics

b.

Antiseptics

c.

Antigens

d.

Antibodies

Question number: 5

» Microorganisms: Friend and Foe » Microorganisms » Protozoa and Algae

MCQ▾

Question

Micro-organism used in the laboratory for research is:

Choices

Choice (4) Response
a.

Protozoa

b.

Algae

c.

Bacteria

d.

Fungi

Question number: 6

» Crop Production and Management » Harvesting » Storage of Crops

MCQ▾

Question

Grain silos are used for storing

Choices

Choice (4) Response
a.

Grains in granaries

b.

Large scale storage of grains

c.

Small storage of grains

d.

Grains in jute bags

Question number: 7

» Crop Production and Management » Preparation of Soil » Tilling or Ploughing

MCQ▾

Question

Big pieces of soil are called as

Choices

Choice (4) Response
a.

Crumbs

b.

Shaft

c.

Plank

d.

Plough

Question number: 8

» Microorganisms: Friend and Foe » Harmful Microorganisms » Disease Causing Microorganisms in Plants

MCQ▾

Question

Micro-organisms which causes disease in plants is:

Choices

Choice (4) Response
a.

Protozoa

b.

Bacteria

c.

Virus

d. Both b. and c. are correct

Question number: 9

» Crop Production and Management » Weeds » Weedicides

MCQ▾

Question

Weedicides is the process of

Choices

Choice (4) Response
a.

Uprooting the weeds manually

b.

Removing weeds by use of harrows spades or trowels (Khurpa)

c.

Remove weeds by spraying of chemicals

d.

Removing weeds by biological method

Sign In