Which of the following is the most common kidney stone-forming compound?
(A) Calcium oxalate
(B) Magnesium oxide
(C) Sodium bicarbonate
(D) Magnesium citrate
If the pH value of a substance is lower than 7, it would be considered as–
(A) Neutral
(B) Base
(C) Acid
(D) Ion
Which one of the following fluids is non-metallic?
(A) Mercury
(B) Alcohol
(C) Water
(D) Bromine
Is gas given with oxygen to patients for diagnosis of breathing problem?
(A) Helium
(B) Organ
(C) Radon
(D) Krypton
Which of the following metals does not form amalgam?
(A) Jink
(B) Iron
(C) Manganese
(D) Copper
What is Carbon?
(A) non-metals
(B) metal
(C) metalloids
(D) none of these
Which of the following is an ohm-conductor?
(A) Germanium
(B) Silicon
(C) Carbon
(D) Silver
Which of the following is the cleanest source of energy?
(A) Biofuels
(B) Fossil Fuel
(C) Nuclear Power
(D) Wind Power
What is the chemical name of quartz?
(A) Calcium oxide
(B) Calcium phosphate
(C) Sodium phosphate
(D) Sodium silicate
Which element is found in the highest amount in the universe?
(A) Helium
(B) oxygen
(C) Hydrogen
(D) Nitrogen
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