(A) Lead
(B) Polonium
(C) Thorium
(D) Radium
Author:
Which of these is liquid at room temperature?
(A) Chlorine
(B) Oxygen
(C) Iodine
(D) Bromine
What will be the color of litmus paper turn into when dipped in orange juice?
(A) Red
(B) Purple
(C) Blue
(D) Orange
Which of these is not a noble gas?
(A) Argon
(B) Hydrogen
(C) Krypton
(D) Neon
Which of the following metals does not react with water to produce Hydrogen?
(A) Sodium
(B) Potassium
(C) Lithium
(D) Cadmium
The most abundant element is the earth’s crust is?
(A) Silicon
(B) Aluminium
(C) Nitrogen
(D) Oxygen
Due to rusting the weight of iron?
(A) Increases
(B) Decreases
(C) Remains the same
(D) Uncertain
What is the air?
(A) Element
(B) Compound
(C) Mixture
(D) Collied