NSO Level 1- Science Olympiad (SOF) Class 8: Questions 943 - 947 of 1076

Access detailed explanations (illustrated with images and videos) to 1076 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time!

View Sample Explanation or View Features.

Rs. 450.00 or

How to register?

Question number: 943

» Chemical Effects of Electric Current

Edit
MCQ▾

Question

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 number: 944

» Chemical Effects of Electric Current

Edit
MCQ▾

Question

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 number: 945

» Light

Edit

Appeared in Year: 2012

MCQ▾

Question

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 number: 946

» Chemical Effects of Electric Current

Edit
MCQ▾

Question

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 number: 947

» Chemical Effects of Electric Current

Edit
MCQ▾

Question

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

Table shows A list of liquids

Table shows A list of liquids

Good Conductors

Poor Conductors

Lemon juice

Vinegar

Tap water

distilled water

Kerosene

vegetable oil

Choices

Choice (4)Response

a.

Tap water, kerosene

b.

Vinegar, kerosene

c.

Lemon juice, vegetable oil

d.

Vinegar, distilled water

Developed by: