NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension: Questions 280 - 284 of 1058

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Question number: 280

» Chemistry » Physical and Chemical Changes

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MCQ▾

Question

Varsha adds a few drop of the universal indicator solution to a dilute solution of taken in a test-tube. She observed………colour.

A test-tube containing dilute solution of NaHCO3

A Test-Tube Containing Dilute Solution of NaHCO3

Choices

Choice (4)Response

a.

mustard

b.

green

c.

blue

d.

Yellow

Question number: 281

» Chemistry » Metals & Non Metals

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MCQ▾

Question

A compound ‘X’ is an allotrope of an element of atomic number 6. Compound ‘X’ is greyish-black in color. By nature, it is opaque and it is used in making ‘pencil leads’ and black paints. Identify the compound ‘X’.

Choices

Choice (4)Response

a.

Carbon

b.

Graphite

c.

Lead

d.

Fullerene

Question number: 282

» Physics » Magnetism & Electricity at Work

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Question

A magnetic needle kept in a non-uniform magnetic field experiences

Choices

Choice (4)Response

a.

a force but not a torque

b.

Neither a torque nor a force

c.

a force and torque

d.

a torque but not a force

Question number: 283

» Biology » Plant and Animal Nutrition

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MCQ▾

Question

Vermicomposting is done by using which organism?

Choices

Choice (4)Response

a.

Frog

b.

Amoeba

c.

Species of earthworm

d.

Lizard

Question number: 284

» Physics » Light

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MCQ▾

Question

On burning an element in air, forms an oxide. On dissolving this oxide in it forms an oxyacid. This oxide is a very good dehydrating agent and on reacting with caustic soda, it forms salt but no salt-formation takes place with . The oxyacid of the element is

Choices

Choice (4)Response

a.

hypo phosphorus acid

b.

phosphorus acid

c.

boric acid

d.

phosphoric acid

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