1. Which among the following is used in making liquors, medicines and as a fuel in aircrafts? (A) Propyl alcohol (B) Dimethyl alcohol (C) Ethyl alcohol (D) Methyl alcohol Ans. (C) 2.
133. Which of the following elements has the lowest melting point? (A) Titanium (B) Tungsten (C) Argon (D) Nickel Ans. (C) 134. The common name of sulphur is (A) Freon (B) Galena
87. Standard 18 carat Gold sold in the Market is – (A) 82 parts of gold and 18 parts of Metal (B) 18 parts of gold and 82 parts other metal (C)
55. Oxygen is a– (A) Reducing agent (B) Combustion nourishing (C) Constituent of all gas (D) Inflammable gas Ans. (B) 56. Carbon monoxide is an inflammable gas which one of the following
1. Identify the metal which is Non-toxic in nature– (A) Gold (B) Cadmium (C) Cobalt (D) Chromium Ans. (A) 2. Main constituent of liquid bleach is – (A) Hydrochloric acid (B) Sodium
42. Which one of the following Metals is used to Heat up the electric iron? (A) Copper (B) Tungsten (C) Nichrome (D) Tin Ans. (C) 43. Which of the following is the
1. Major portion of the earth’s crust is mainly constituted by (A) Oxygen and Iron (B) Oxygen and Silicon (C) Silicon and Iron (D) Silicon and Aluminium Ans. (B) 2. The most
1. Who proposed the Modern Periodic Table? (A) Faraday (B) Mendeleev (C) Newton (D) Bohr Ans. (B) 2. Total number of Inner Transition Elements are– (A) 16 (B) 28 (C) 32 (D)
1. Formation of cation occurs by– (A) Gain of electron (B) Loss of electron (C) Gain of proton (D) Loss of proton Ans. (B) 2. Formation of anions occurs by– (A) Loss
77. What is the common name of Calcium Hypochlorite? (A) Water (B) Bleaching powder (C) Baking soda (D) Baking powder Ans. (B) 78. Spinach contains _____. (A) Lactic Acid (B) Oxalic Acid