Q. The early attempt to classify elements as metals and non-metals was made by -
1) Mendeleev
2) Lother Meyer
3) Lavoisier
4) Henry Moseley
Q. The magnet is strongest near the -
1) Poles of the magnet
2) Ends of the magnet
3) Centre of the magnet
4) On equator point from the poles of the magnet
Q. Which is the device used to detect and measure small electric current in a circuit?
1) Tansformer
2) Galvanometer
3) Thermometer
4) Electromagnetic Induction
Q. The lowest temperature at which an oil gives sufficient vapours to form an explosive mixture with air is known as -
1) Flash Point
2) Smoke Point
3) Explosive Point
4) Acidic Flux
Q. The value of G in the formula for gravitational force depends on -
1) Mass of the earth only
2) The radius of earth only
3) Both mass and radius of earth
4) Neither mass nor the radius of earth
Q. 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 -
1) Newton's first law of motion
2) Newton's second law of motion
3) Newton's third law of motion
4) Newton's law of gravitation
Q. The numerical ratio of displacement to distance for a moving object is -
1) Always Less than 1
2) Equal to 1 or more than 1
3) Always more than 1
4) Equal to 1 or less than 1
Q. Who was the first scientist of the world to use the symbols to represent elements in a shortway?
1) Dalton
2) Jons Jakob Berzelious
3) Neils Bohr
4) Dmitri Mendeleev
Q. Which of the following is/ are physical changes?
I. Melting of iron rod
II. Rusting of iron metal
III. Bending of an iron rod
IV. Drawing a wire of iron metal
Correct code is -
1) Only I, II and III
2) Only I, II and IV
3) Only I, III and IV
4) Only II, III and IV
Q. Milk of Magnesia is a -
1) Colloid
2) True solution
3) Homogeneous Mixture
4) Suspension
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