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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Burning of wood is a ______ change....?

(A) Chemical
(B) Physical

(C) Temporary
(D) Both A and B

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The type of reproduction which is necessary for evolution is _____...?

(A) Vegetative propagation
(B) Fragmentation

(C) Sexual reproduction
(D) Cloning

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Which isotope is used to investigate carbon uptake and biochemical pathways in plants...?

(A) Phosphorus - 32
(B) Carbon - 14

(C) Lead - 210
(D) Nitrogen - 15

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The northern and the southern hemispheres are separated by ______...?

(A) The International date line
(B) The plane of the Equator

(C) The place of Tropic of cancer
(D) The place of Tropic Capricom

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The presence of ice in which region of the moon has been conclusively established...?

(A) Southern pole region
(B) Northern pole region

(C) Equator
(D) All of the above

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Weight is the pull of _____ that acts on the mass of an object....?

(A) Stars
(B) Magnet

(C) Gravity
(D) Electrostatic force

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According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in_________...?

(A) 2 hours
(B) 5 hours

(C) 8 hours
(D) 10 hours

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Detergents dissolved in water help in cleaning clothes by_________...?

(A) Increasing the temperature of water
(B) Reacting chemically with dirt

(C) Reducing the surface tension of water
(D) Dissolving dirt

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Pure limestone is called _______...?

(A) Aluminum Oxide
(B) Calcium Carbonate

(C) Calcium Sulphate
(D) None of these

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