NSO Level 1- Science Olympiad (SOF) Class 8: Questions 652 - 654 of 1076

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Question number: 652

» Combustion and Flame

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MCQ▾

Question

Sanjana’s grandmother lives in a village and cooks on chulha and uses dry wood or coal as fuel. Sanjana’s mother uses LPG for cooking. Both of them boast that their way of cooking is beneficial and gives reasons supporting their argument. Read the points carefully and decide who is correct.

Table of difference between type of fules use

Table of difference between type of fules use

Mother

Grand mother

LPG is easy to burn and takes less time for cooking.

Wood and coal are cheap fuels

LPG produce very little harmful materials on burning

The food cooked is tastier.

LPG does not produce smoke

The smoke produced is good for getting rid of pests and insects

LPG does not produce soot that causes asthma

The food cooked on choola lasts for longer time without spoiling.

Choices

Choice (4)Response

a.

Grand mother

b.

Mother

c.

None of the above

d.

All of the above

Passage

Given below is a flow chart of the different stages of development of a baby. Answer questions below with the help of this flow chart.

Image of flow chart of stages of development of baby

Image of Flow Chart of Stages of Development of Baby

Question number: 653 (1 of 5 Based on Passage) Show Passage

» Reproduction in Animals

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MCQ▾

Question

The part labelled as Z in the flowchart is

Choices

Choice (4)Response

a.

Foetus

b.

Egg

c.

Progeny

d.

Embryo

Question number: 654 (2 of 5 Based on Passage) Show Passage

» Reproduction in Animals

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MCQ▾

Question

The difference between sperm, ovum and zygote is:

Choices

Choice (4)Response

a.

Ovum has two sets of chromosomes

b.

Zygote has two sets of chromosomes

c.

Sperm has two sets of chromosomes.

d.

All of the above

Developed by: