Everyday Science MCQs

5120 MCQs  (Page 223 of 512)

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The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:_______?
A. Bromine
B. Fluorine
C. Chlorine
D. Sulphur
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Non stick cooking utensils are coated with________?
A. Black paint
B. Pvc
C. Teflon
D. Polystyrene
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Which of the following are the ingredients of gun metal?
A. Iron, zinc and titanium
B. Iron and tin
C. Iron, brass and tin
D. Copper, tin and zinc
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Marsh gas is_______?
A. Nitrogen
B. Ethane
C. Methane
D. Hydrogen
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LPG consists of mainly:___________?
A. Methane, ethane and hexane
B. Ethane, hexane and nonane
C. Methane, hexane and nonane
D. Methane, butane and propane
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Potassium Permanganate is used for purifying drinking water, because_________?
A. It is a sterilising agent.
B. It dissolves the impurities of water.
C. It is a reducing agent.
D. It is an oxidising agent.
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Blood does not coagulate inside the body due to the presence of___________?
A. Haemoglobin
B. Fibrin
C. Heparin
D. Plasma
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Which set of quantum numbers is not allowed?
A. N=2,l=1,m1=0,ms=+1/2
B. N=2,l=1,m1=-1,ms=+1/2
C. N=2,l=0,m1=0,ms=-1/2
D. N=2,l=2,m1=1,ms=-1/2
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The light of distant stars is affected by __________ ?
A. The earth’s atmosphere
B. Interstellar dust
C. Both a and b
D. None of these
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Main and excessive part of plasma consists of ________?
A. Carbon dioxide
B. Oxygen
C. Water
D. Glucose
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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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