The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ...? Mcqs

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The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ...?

(A) Ionosphere
(B) Troposphere

(C) Mesosphere
(D) Stratosphere

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The physical methods used to measure physical properties is called...?

(A) Combustion analysis method
(B) Volumetric analysis method

(C) Atomic emission spectroscopy method
(D) Gravimetric analysis method

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Proton number is denoted by symbol __________ ...?

(A) M
(B) Z

(C) P
(D) A

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Which one is Natural Satellite...?

(A) Sun
(B) Moon

(C) Venus
(D) Mercury

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All matter is made of ___________...?

(A) Air
(B) Water

(C) Vibrations
(D) Atoms

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If we dissolve sand into the water, then the mixture is said to be _______...?

(A) Solution
(B) Suspension

(C) Colloids
(D) Concentrated solution

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Percentage of oxygen in human body is _____...?

(A) 65%
(B) 70%

(C) 10%
(D) 18%

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The ratio of output to input is called...?

(A) Energy
(B) Work

(C) Power
(D) Efficiency

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A formula that indicates actual number and type of atoms in a molecule is called...?

(A) Chemical formula
(B) Empirical formula

(C) Molecular formula
(D) Formula mass

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In an atom number of protons and neutrons are added to obtain ________...?

(A) In an atom number of protons and neutrons are added to obtain ________? Number of electrons
(B) Number of nucleons

(C) Atomic number of element
(D) Number of isotopes

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