Permanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ...? Mcqs

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Permanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ...?

(A) Zeolites
(B) Sulphonides

(C) Lime
(D) Nitrates

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Transfer of internal energy by collision of particles and movements of electrons within the body is called...?

(A) Conduction
(B) Convection

(C) Radiation
(D) Insulation

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Which stone floats on water...?

(A) Pumice stone
(B) Lime stone

(C) Basalt stone
(D) Quartzite stone

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In general, wind speed of 10 –13 kph caused_______...?

(A) minor or no damage
(B) considerable damage

(C) severe damage
(D) extreme damage

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In which object, do not form shadows...?

(A) Transparent
(B) Translucent

(C) Opaque
(D) None

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Water present in watermelon...?

(A) 92%
(B) 93%

(C) 94%
(D) 95%

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An _______ is a slanting surface connecting a lower level to a higher level....?

(A) Lever
(B) Pulley

(C) Inclined Plane
(D) Screw

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The type of coordination through electrochemical signals is _______...?

(A) Nervous
(B) Chemical

(C) Mechanical
(D) All of these

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The theorem "In a right-angle triangle, the area of the square of the hypotenuse is equal to the sum of the areas of the squares of the other two sides", was discovered by:...?

(A) Archimedes
(B) Pythagoras

(C) Isaac Newton
(D) Socrates

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The term acid comes from the Latin word ____...?

(A) Acere
(B) Acidos

(C) Acare
(D) Acre

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