NSO Level 1- Science Olympiad (SOF) Class 10: Questions 960 - 963 of 986

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Question 960

Question

MCQ▾

An alloy which does contain iron is

Choices

Choice (4)Response

a.

Steel

b.

Brass

c.

Bronze

d.

Solder

Question 961

Question

MCQ▾

Two students noted the initial colour of the solutions kept in breakers, after inserting rods in each solution and leaving it undisturbed for two hours, the colour of each solution was again noted.

The Observation for Metal and Salt Solution

They recorded their observations in the form of table given below:

Table of the Color of the Solution
StudentColor of the solution
AInitial

Final

Colorless

Colorless

Colorless

Colorless

Colorless

Colorless

Colorless

Colorless

BInitial

Final

Colorless

Colorless

Light Green

Colorless

Colorless

Colorless

Blue

Reddish brown

Which student noted the color change in all the two beakers correctly?

Choices

Choice (4)Response

a.

B student

b.

A student

c.

Question does not provide sufficient data or is vague

d.

All of the above

Question 962

Question

MCQ▾

Choose correct disadvantage/ (s) of geothermal energy is/are

Choices

Choice (4)Response

a.

Expensive

b.

Only few sites available for harnessing energy

c.

High installation cost

d.

All a., b. and c. are correct

Question 963

Question

MCQ▾
Image Shown the Reaction of Formic Acid with NaOH

In this reaction which of the following is evolved?

Choices

Choice (4)Response

a.

And Water

b.

Water

c.

d.

Hydrogen

Developed by: