The physics phenomenon when, in polar regions like Alaska and Northern Canada, a splendid display of colours is seen in the sky is called a/an – (A) aurora borealis (B) star shower (C) active galactic nucleus (D) star’s intrinsic luminosity Answer: (A) aurora borealis More Question Question: The best malleable metal is – (A) Aluminum … Read more
Question: Milk of Magnesia is a – (A) Colloid (B) True solution (C) Homogeneous Mixture (D) Suspension Answer: (D) Suspension Explanation: The milk of Magnesia is a suspension of magnesium hydroxide in water. The solid particles and water remain separate in a suspension. More Question Question: The best malleable metal is – (A) Aluminum (B) … Read more
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 – (A) Only I, II and III (B) Only I, II and IV (C) Only I, III and IV (D) Only … Read more
Who was the first scientist of the world to use symbols to represent elements in a shortway? (A) Dalton (B) Jons Jakob Berzelious (C) Neils Bohr (D) Dmitri Mendeleev Answer: (A) Dalton More Question Question: Which of the following metals in pure form has the highest melting point? (A) Tungsten (B) Copper (C) Platinum (D) … Read more
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 Answer: (D) Neither mass nor the radius of the earth More Question … Read more
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 Answer: (A) Newton’s … Read more
Sun derives its energy from – (A) The fusion of hydrogen nuclei into helium nuclei (B) The fusion of helium nuclei into hydrogen nuclei (C) The fission of hydrogen nuclei (D) The fission of helium nuclei Answer: (A) The fusion of hydrogen nuclei into helium nuclei More Question Question: The best malleable metal is – … Read more
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 Answer: (D) Equal to 1 or less than 1 More Question Question: Which of the following … Read more
The device used for producing electric current is called – (A) Generator (B) Galvanometer (C) Ammeter (D) Motor Answer: (A) Generator More Question Question: The best malleable metal is – (A) Aluminum (B) Silver (C) Gold (D) Lead Answer Question: The early attempt to classify elements as metals and non-metals was made by – (A) … Read more
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 Answer: (B) Ends of the magnet More Question Question: Which of the following metals in pure form has the highest melting point? (A) … Read more