Which among the following is a positively charged particle emitted by a radioactive element...? Mcqs

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Which among the following is a positively charged particle emitted by a radioactive element...?

(A) Beta rays
(B) Alpha Rays

(C) Gamma rays
(D) Cathode rays

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Mixture of two metals is called...?

(A) Dispersant
(B) Alloy

(C) Amalgam
(D) Metaloid

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Who discovered the solar system...?

(A) Copernicus
(B) Newton

(C) Galileo
(D) Kepler

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Water drops are spherical because of...?

(A) Air pressure
(B) Density

(C) Viscosity
(D) Surface tension

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Which Pakistani Scientist was awarded Nobel Prize for physics in 1979...?

(A) Dr.Abdul Qadeer Khan
(B) Dr Muneer Ahmad

(C) Dr .Samar Mubarak
(D) Dr Abdus Salam

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Which of the following is the most important factor in causing mass movements...?

(A) Temperature
(B) Pressure

(C) Water content
(D) Bulk composition

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A metal which is liquid at room temperature is...?

(A) Gold
(B) Mercury

(C) Platinum
(D) Aluminum

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Which is used as an electrode in the dry cell...?

(A) Lead
(B) Graphite

(C) Molybdenum
(D) None of these

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Why is the Ozone important for mankind...?

(A) Protection from ultraviolet rays of sun
(B) It releases oxygen in the air

(C) It maintains temperature of the earth
(D) It releases hydrogen in the atmosphere

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Which one of the following is unit of length:...?

(A) Joule
(B) Angstrom

(C) Newton
(D) Dalton

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