(A) Silicon
(B) Phosphorus
(C) Sulfur
(D) Chloride
The answer is (A) Silicon
How many periods and groups are present in the periodic table?
(A) 7 periods and 18 groups
(B) 8 periods and 7 groups
(C) 7 periods and 7 groups
(D) 8 periods and 8 groups
The answer is (A) 7 periods and 18 groups
Which of the following is not a chemical reaction?
(A) Burning of paper
(B) Digestion of food
(C) Conversation of Water into stream
(D) Burning of coal
The answer is (C) Conversation of Water into stream
What is the symbol for Lead?
(A) Le
(B) Pb
(C) Bi
(D) Ld
The answer is (B) Pb
What is the symbol for Mercury?
(A) Hg
(B) Ha
(C) Mr
(D) Mc
The answer is (A) Hg
How many elements are named after planets?
(A) 2
(B) 4
(C) 5
(D) 10
The answer is (B) 4
An acid reacts with a base to form
(A) Alkali
(B) Salt
(C) Indicator
(D) pH paper
The answer is ((B) Salt
The most commonly used bleaching agent is
(A) alcohol
(B) Carbon Dioxide
(C) Chlorine
(D) Sodium Chlorine
The answer is (C) Chlorine
The position of an element in the periodic table is determined by its ___ number?
(A) Electron
(B) Proton
(C) Neutron
(D) Positron
The answer is (B) Proton
Oxidation is a chemical reaction involving the?
(A) Gain of Electrons
(B) Loss Electrons
(C) Gain of Protons
(D) Loss of Protons
The answer is (B) Loss Electrons