General Science - Mock Test 43

Question 421

Which one of the following element is used in solar cells?

A) Silicon B) Cerium C) Astatine D) Vanadium

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Question 422

Stephen Hawking is known for his extensive work in the field of?

A) Computer Science B) Organic Chemistry C) Plant Pathology D) Theoretical Physics

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Question 423

In an ecosystem, green plants are?

A) Consumers B) Parasites C) Decomposer D) Producers

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Question 424

Which of the following Vitamins is essential for blood clotting?

A) Vitamin – K B) Vitamin – A C) Vitamin – D D) Vitamin – C

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Question 425

The ginger is a?

A) Bulb B) Rhizome C) Tuber D) Modified root

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Question 426

At what temperature is the density of water maximum?

A) 100°C B) 4°C C) 0°C D) – 4°C

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Question 427

The antibiotic penicillin is produced by?

A) Bacteria B) Fungus C) Algae D) Lichens

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Question 428

Lightening cause rainfall because?

A) It cause combination of oxygen and nitrogen B) Some of the gas molecules become bigger C) It activate H2O molecule D) Photo-electricity reaction starts

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Question 429

What is the unit for measuring the pitch or frequency of sound ?

A) Coulomb B) Hum C) Cycles D) Decibel

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Question 430

Brass gets discoloured in air due to the presence of which gas in air?

A) Carbon dioxide B) Oxygen C) Hydrogen Sulphide D) Nitrogen

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