The gas, commonly known as “laughing gas”, is...? Mcqs

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The gas, commonly known as “laughing gas”, is...?

(A) Carbon Dioxide
(B) Sulfur Dioxide

(C) Nitrous Oxide
(D) Sodium Oxide

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Year is longest on : _____________...?

(A) Mercury
(B) Venus

(C) Mars
(D) The Earth

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Which of the following is nutritional deficiency disease...?

(A) Albinism
(B) Cirrhosis

(C) Rabies
(D) Pellagra

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The atmosphere of moon consists of______________...?

(A) 90% Hydrogen, 10% Nitrogen
(B) 80%Nitrogen, 20% Hydrogen

(C) 60% Nitrogen, 40%inert gases
(D) None

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An alloy is the homogeneous mixture of ______...?

(A) Two solid
(B) Two liquid

(C) Two gases
(D) Solid and liquid

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Ten identical steel balls, each with a mass of 27 g, are immersed in a measuring cylinder initially containing a certain volume of water. The water level rises by 50 cm³ after immersing the balls. What is the density of the steel...?

(A) 0.90 gm/cm^3
(B) 8.1 gm/cm^3

(C) 9.0 gm/cm^3
(D) 13.5 gm/cm^3

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The process which converts carbon dioxide into glucose is known as...?

(A) Photosynthesis
(B) Respiration

(C) Decomposition
(D) None

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Which statement is/are correct about particles in gases...?

(A) Particles are widely spread out
(B) Particles are not in regular pattern and Particles have large empty spaces between them

(C) Particles are widely spread out
(D) All of these

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A chronometer meter measures__________...?

(A) Sound waves
(B) Time

(C) Color contrast
(D) Water waves

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An optical instrument which is used measure the properties of visible light is called...?

(A) Microscope
(B) Telescope

(C) Spectroscope
(D) Oscilloscope

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