Home ≫ General Knowledge ≫ Chemistry ≫ Page 7
61. Which of the following is the petroleum wax?
  A.  Bees wax
  B.  Carnauba wax
  C.  Jojoba wax
  D.  Paraffin wax
     
   
View Answer

62. Which variety fo coal contains recognisible traces of the original plant material
  A.  Anthracite
  B.  Lignite
  C.  Peat
  D.  Bitumen
     
   
View Answer

63. Which is the purest form of iron?
  A.  Steel
  B.  Wrought iron
  C.  Pig iron
  D.  Cast iron
     
   
View Answer

64. Detergents used for cleaning clothes and utensils contain
  A.  sulphonates
  B.  bicarbonates
  C.  nitrates
  D.  bismuthates
     
   
View Answer

65. Radioactive disintegration of uranium ultimately results in formation of
  A.  radium
  B.  thorium
  C.  lead
  D.  polonium
     
   
View Answer

66. Which of the followig pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights,electric shavers,etc.?
  A.  Nickel and cadmium
  B.  Iron and cadmium
  C.  Lead peroxide and lead
  D.  Zinc and carbon
     
   
View Answer

67. Which of the following is a supercooled liquid?
  A.  Ice cream
  B.  Glass
  C.  Teflon
  D.  Mercury
     
   
View Answer

68. The first metal used by a man was
  A.  Brass
  B.  Silver
  C.  bronze
  D.  Copper
     
   
View Answer

69. Which of the following is used to remove rust stains on cloth?
  A.  Kerosene
  B.  Lime
  C.  Oxalic acid solutions
  D.  Petrol
     
   
View Answer

70. Tear gas is
  A.  Carbonyl chloride
  B.  Chloroprene
  C.  Nitrous oxide
  D.  Bleaching powder
     
   
View Answer

Copyright © 2020-2022. All rights reserved. Designed, Developed and content provided by Anjula Graphics & Web Desigining .