NSO Level 1- Science Olympiad (SOF) Class 8: Questions 943 - 947 of 1175

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Question 943

Question

MCQ▾

Lena has made a tester using an iron rod, two wires and a bulb. If she wants to make a handle case, it is advisable that she may select

Choices

Choice (4)Response

a.

Rubber

b.

Plastic

c.

Steel

d.

Glass

Question 944

Question

MCQ▾

Iron cans, used for storing food are plated with tin. This is to

Choices

Choice (4)Response

a.

Prevent rusting

b.

Prevent the contact between food and iron

c.

Protect the food from spoiling

d.

All a., b. and c. are correct

Question 945

Appeared in Year: 2012

Question

MCQ▾

During a thunderstorm, an observer can see lightning before hearing its thunder. why does he see lightning before he hear thunder?

Choices

Choice (4)Response

a.

Sound cannot reflect off surfaces as easily as light

b.

Sound travels slower than light.

c.

Sound needs a medium to travel through.

d.

Sound is not processed by the brain as fast as light

Question 946

Question

MCQ▾

In a LED, the positive terminal of the battery is connected to the

Choices

Choice (4)Response

a.

Any lead

b.

Longer lead

c.

Shorter lead

d.

Question does not provide sufficient data or is vague

Question 947

Question

MCQ▾

A list of liquids are given in the table. Find out the wrong entries.

Table Shows a List of Liquids
Good ConductorsPoor Conductors
Lemon juiceVinegar
Tap waterdistilled water
Kerosenevegetable oil

Choices

Choice (4)Response

a.

Tap water, kerosene

b.

Vinegar, kerosene

c.

Lemon juice, vegetable oil

d.

Vinegar, distilled water

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