NSO Level 1- Science Olympiad (SOF) Class 8: Questions 1026 - 1029 of 1076

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Question number: 1026

» Some Natural Phenomena

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MCQ▾

Question

The difference between a conducting and non-conducting material is

Choices

Choice (4) Response

a.

A non-conducting material accumulates the acquired electric charge but a conducting material do not separate the charges.

b.

A conductor discharges the charge through a non-conducting material.

c.

A conductor accumulates the acquired electric charge but a non-conducting material do not separate the charges.

d.

Question does not provide sufficient data or is vague

Question number: 1027

» Crop Production and Management

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Appeared in Year: 2012

MCQ▾

Question

The given figure shows an irrigation method used in agriculture practice.

Image shows Agriculture Method

Image Shows Agriculture Method

Image shows Agriculture Method

Which of the following is correct regarding this irrigation method?

Choices

Choice (4) Response

a.

It is a boon in regions where availability of water is poor.

b.

The method provides water to the plants drop by drop at their roots.

c.

It is the best technique for watering fruit plants, gardens, and trees.

d.

All a. , b. and c. are correct

Question number: 1028

» Chemical Effects of Electric Current

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MCQ▾

Question

Nowadays porcelain switch boards are replaced by plastic switch boards. The reason is

Choices

Choice (4) Response

a.

Plastic is light in weight and not brittle.

b.

Plastic is an insulator.

c.

Porcelain is not an insulator.

d.

Both a. and b. are correct

Question number: 1029

» Chemical Effects of Electric Current

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MCQ▾

Question

Sachi was asked to observe an arrangement of electroplating and find out the cathode and anode. She noted her observations in a note pad as follows.

1. There is no marking of or in the cell.

2. One of the electrodes is thin and irregular in shape.

3. The switch is in off position, which shows that the process is completed.

The correct conclusion would be

Choices

Choice (4) Response

a.

The thin electrode is the cathode and the other one is anode.

b.

Marking can be given to the end which is connected to the thick electrode.

c.

The thin electrode is the anode and the other one is cathode.

d.

The wire leading from thin electrode represents the ve end of the battery.

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