1.Which of the following is used in beauty parlours for hair setting?
2.Which of the following is a non-metal that remains liquid in room temperature?
3.From which mineral is radium obtained —
4.What is laughing gas?
5.Which of the following is used as a material for making protective windows in space probes?
6.Which form of phosphorus is used in safety metals?
7.Stainless steel is an alloy of —
A.Iron, Carbon and Nickel
B.Iron and Manganese
C.Iron, Chromium and Zinc
D.Iron, Chromium and Nickel
8.Which of the following is not correctly matched?
A.Galena : Lead Sulphide
B.Green vitriol : Copper sulphate
C.Plaster of Paris : Calcium sulphate
D.Calomel : Mercurous Chloride
9.Which of the following metals forms an amalgam with other metals?
10. Which of the following is not an ore of Aluminium?