All the mixtures containing a solid and a liquid can be separated by -
I. Centrifugation
II. Evaporation
III. Crystallisation
IV. Chromatography
Correct code is -
(A) Only I
(B) Only II and III
(C) I, II, III and IV
(D) Only III and IV
Answer: (C) I, II, III and IV
More Question
Question: The best malleable metal is -
(A) Aluminum
(B) Silver
(C) Gold
(D) Lead
Question: The early attempt to classify elements as metals and non-metals was made by -
(A) Mendeleev
(B) Lother Meyer
(C) Lavoisier
(D) Henry Moseley
Question: The magnet is strongest near the -
(A) Poles of the magnet
(B) Ends of the magnet
(C) Centre of the magnet
(D) On equator point from the poles of the magnet
Question: Which is the device used to detect and measure small electric currents in a circuit?
(A) Transformer
(B) Galvanometer
(C) Thermometer
(D) Electromagnetic Induction
Question: The lowest temperature at which an oil gives sufficient vapours to form an explosive mixture with air is known as -
(A) Flash Point
(B) Smoke Point
(C) Explosive Point
(D) Acidic Flux
Question: The value of G in the formula for gravitational force depends on -
(A) Mass of the earth only
(B) The radius of the earth only
(C) Both mass and radius of the earth
(D) Neither mass nor the radius of the earth
Question: When a hanging carpet is beaten with a stick, the dust particles in it start coming out of it. This phenomenon can be explained by making use of -
(A) Newton's first law of motion
(B) Newton's second law of motion
(C) Newton's third law of motion
(D) Newton's law of gravitation
Question: The numerical ratio of displacement to distance for a moving object is -
(A) Always Less than 1
(B) Equal to 1 or more than 1
(C) Always more than 1
(D) Equal to 1 or less than 1
Question: Milk of Magnesia is a -
(A) Colloid
(B) True solution
(C) Homogeneous Mixture
(D) Suspension
