Which metal starts floating when put in water?
(A) calcium
(B) Nickel
(C) Magnesium
(D) Potassium
Approximate pH value of lemon juice?
(A) 10
(B) 2.2
(C) 12
(D) 14
Which metal does not react with oxygen even at higher temperatures?
(A) Iron
(B) Gold
(C) Potassium
(D) Aluminum
With which substance is it beneficial to treat a bee sting?
(A) Baking Soda
(B) sodium carbonate
(C) sodium chloride
(D) Others
What percentage of carbon is in steel?
(A) 3%
(B) 4%
(C) 2%
(D) 5%
What kind of brushing should be done to clean the mouth so that dentistry can be stopped?
(A) acidic dentin
(B) basic dentistry
(C) neutral dentition
(D) all
Which gas accumulates at the anode after electromagnetic decomposition of alumina?
(A) Hydrogen gas
(B) nitrogen gas
(C) Carbon dioxide gas
(D) oxygen gas
Which of the following is the conductor of nonmetal electricity?
(A) graphite
(B) Copper
(C) Sulfur
(D) diamond
Is zinc ore?
(A) zinc blade
(B) Bauxite
(C) sodium chloride
(D) Sinawar
Which of the following metals can be cut with a knife?
(A) Magnesium
(B) Sulfur
(C) Sodium
(D) Chromium
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