Acid converts blue litmus?
(A) White
(B) Purple
(C) Green
(D) red
What is the acid found in bees?
(A) Formic acid
(B) Acetic acid
(C) Carbolic acid
(D) Oxalic acid
Which of the following is the softest?
(A) Sodium
(B) Copper
(C) Iron
(D) Aluminum
Which is the first metal used by humans?
(A) Gold
(B) Iron
(C) Copper
(D) Silver
Used for washing clothes?
(A) Carbonate
(B) Sulfate
(C) Sulfonate
(D) Bicarbonate
Get the Examsbook Prep App Today