Everyday Science MCQs

5120 MCQs  (Page 210 of 512)

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Proton number is denoted by symbol __________ ?
A. M
B. Z
C. P
D. A
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Elements which have same number of protons but different number of neutrons are called as _________ ?
A. Isotopes
B. Isomers
C. Allotropes
D. Allomers
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Hydrogen bomb is based on the principle of ________ ?
A. Nuclear fusion
B. Artificial radioactivity
C. Natural radioactivity
D. Nuclear fission
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Brass gets discoloured in air because of the presence of which of the following gases in air ________ ?
A. Carbon dioxide
B. Oxygen
C. Nitrogen
D. Hydrogen sulphide
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A ‘breath test’ used by traffic police to check drunken driving uses ____?
A. Turmeric on filter paper
B. Silica gel coated with silver nitrate
C. Potassium permanganate-sulphuric acid
D. Potassium dichromatic-sulphuric acid
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What is the chemical formula for Sodium carbonate _______ ?
A. Na3co2
B. Cna2o3
C. Na2co3
D. Na3co3
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A mixture of sand and naphthalene can be separated by ________ ?
A. Chromatography
B. Fractional distillation
C. Sublimation
D. None of these
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The M.K.S. system was first introduced by _________ ?
A. Giorgi
B. Archimedes
C. Eienstein
D. Newton
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What is the chemical formula for Sulfuric acid?
A. C2h6o
B. Caso4
C. C2h4o2
D. H2so4
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Which of the following is a diverse group of hydrophobic molecules?
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic acids
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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