What is the chemical formula for Sodium carbonate _______ ...? Mcqs

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What is the chemical formula for Sodium carbonate _______ ...?

(A) Na3CO2
(B) CNa2O3

(C) Na2CO3
(D) Na3CO3

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Which one of the following is true...?

(A) The moon has both atmosphere and magnetic field
(B) The moon has no atmosphere or magnetic field

(C) The moon has atmosphere but no magnetic field
(D) The moon has magnetic field but no atmosphere

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A solid is a state of matter _____...?

(A) Definite volume and indefinite shape
(B) Indefinite volume and definite shape

(C) Definite volume and definite shape
(D) Indefinite volume and indefinite shape

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The sky appears blue because the earth’s atmosphere __________...?

(A) Scatters blue light
(B) Reflects blue light

(C) Transmits blue light
(D) Has actual blue cover

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Pupa of a bee is also called...?

(A) Egg
(B) Cocoon

(C) Adult
(D) Grub

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Nuclear radiation is emitted by those elements whose:...?

(A) molecules are stable
(B) molecules are unstable

(C) nuclei are stable
(D) nuclei are unstable

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What type of energy wind produces which is used to rotate the blades of fan of energy system...?

(A) Potential energy
(B) Kinetic energy

(C) Thermal energy
(D) Electrical energy

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Water present in watermelon...?

(A) 92%
(B) 93%

(C) 94%
(D) 95%

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Muscle fatigue is caused by the accumulation of___________...?

(A) Uric acid
(B) Lactic acid

(C) Oxalacetic acid
(D) Fyruvie acid

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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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