Baking soda is
(A) Sodium Sulphate
(B) Sodium Hydroxide
(C) Sodium Chloride
(D) Sodium Bicarbonate
Which of the following is the lightest element in the universe?
(A) Nitrogen
(B) Silicon
(C) Helium
(D) Hydrogen
Which one of the following is not a plant product?
(A) Nicotine
(B) Saccharin
(C) Caffeine
(D) Piperine
In atom, neutron was discovered by –
(A) Rutherford
(B) Newton
(C) J.J . Thomson
(D) Chadwick
The atoms, in which the number of Protons is same but the number of neutrons is different, are known as –
(A) Isotones
(B) Isotopes
(C) Isobars
(D) Isomers
The atomic nucleus was discovered by
(A) Einstein
(B) Thompson
(C) Rutherford
(D) Dalton
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