Chemistry - Mock Test 57

Question 561

Neclear fission is caused by the impact of ?

A) Neutrons B) Protons C) Deuteron D) Electron

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Question 562

Gamma rays are?

A) high energy electrons B) low energy electrons C) high energy electromagnetic D) high energy positions waves

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Question 563

Heavy water is used as a coolant in nuclear reactors Heavy water is?

A) Water rich in minerals B) Ozonized water C) Water containing minerals of heavy metal D) Water containg heavy isotope of hydrogen

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Question 564

The α – particles are?

A) High energy electrons B) Positively charged hydrogen ions C) High energy x –ray radiations D) double positively charged helium nuclei

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Question 565

The phenomenon of radioactivity was discovered in 1898 AD by?

A) Henri Becquerel B) J.J Thomson C) `Marie Curie D) Pierre Curie

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Question 566

Isobars are lines displaying areas of equal?

A) Humidity B) Temperature C) Rainfall D) Atmospheric pressure

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Question 567

Species containing same number of electrons are called?

A) Isotopes B) Isobars C) Isoelectronic D) Isotones

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Question 568

Neutrino has ?

A) charge + 1, mass 1 B) charge 0, mass 0 C) charge – 1, mass 1 D) charge 0, mass 1

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Question 569

The word ‘insolation’ means?

A) Matters which insulates B) Incoming solar radiation C) Insoluble matters D) None of the above

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Question 570

Neutron was discovered by?

A) J. J. Thomson B) Chadwick C) Rutherford D) Priestley

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