Everyday Science MCQs

5120 MCQs  (Page 222 of 512)

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The gases used in different types of welding would include ___________?
A. Oxygen and hydrogen
B. Oxygen, hydrogen, acetylene and nitrogen
C. Oxygen, acetylene and argon
D. Oxygen and acetylene
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The ozone molecule contains which type of bonding__________?
A. Dative bond
B. Covalent bond
C. Both a and b
D. Ionic bond
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The O-O linkage is present in__________?
A. H2s2o3
B.h2so8
C. H2s4o6
D. H2 s2 o6
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The number of lone pairs in XeOF4 is_________?
A. O
B. 1
C. 2
D. 3
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Argon gas was discovered by_______?
A. Rayleigh
B. Ramsay
C. Lockerey
D. Dalton
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SO2 reacts with Cl in sunlight to form__________?
A. Sulphur dioxide
B. Sulphuryl chloride
C. Suphanyl chloride
D. All of the above
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Oxidation state +1 for phosphorous is found in___________?
A. H3po3
B. H3po4
C. H3po2
D. H2p2o7
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Electric bulb filament is made of__________?
A. Copper
B. Aluminum
C. Lead
D. Tungsten
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Tetraethyl lead is used as______?
A. Pain killer
B. Fire extinguisher
C. Mosquito repellent
D. Petrol additive
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The average salinity of sea water is________?
A. 3%
B. 3.5%
C. 2.5%
D. 2%
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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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