Atom which loses two electrons from its outer shell to form ion is called...? Mcqs

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Atom which loses two electrons from its outer shell to form ion is called...?

(A) Oxygen
(B) Potassium

(C) Magnesium
(D) Carbon

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Which is the nearest star to our sun...?

(A) Proxima Centurai
(B) Alpha Scorpii

(C) Beta Orionis
(D) Vega

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Air contains volume of carbon dioxide approximately...?

(A) 3%
(B) 33%

(C) 0.3%
(D) 0.03%

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The splitting of a heavy nucleus into smaller nuclei is called...?

(A) Fusion
(B) Fission

(C) Half-life
(D) Gamma decay

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At what time of day is the relative humidity normally at a minimum ________________ ...?

(A) When the air temperature is highest
(B) Just before sunrise

(C) About midnight
(D) When the air temperature is lowest

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Organisms that eat all the dead and waste products of producers and consumers are called...?

(A) Producers
(B) Consumers

(C) Decomposers
(D) None

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Which does not make use of the expansion and contraction...?

(A) A thermometer
(B) An electric iron

(C) A railway track
(D) An electric fan

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Biological method involves all of the following except...?

(A) Data collection
(B) Observation

(C) Experiment
(D) Proportion

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Scientific reasoning moves from specific to general ____...?

(A) Inductive
(B) Deductive

(C) Observation
(D) Both a and b

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Human population growth is greatest in developing countries because ...?

(A) the birth rate is high in developing countries
(B) the death rate is high in developing countries.

(C) much of the population has already reached the child bearing age.
(D) most of the world’s population lives in industrialized countries.

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