1 | Shock absorbers are usually mode of steel as it? | Has Higher elasticity |
2 | Identify the metal which is non-toxic in nature- | Gold |
3 | Which of the following metal is found in Free State in nature | Gold |
4 | Most important ore of Lead is- | Galena |
5 | Which of the purest commercial form of Iron? | Wrought Iron |
6 | Which of the following is purest form of Iron? | Wrought Iron |
7 | Which one of the following is known as the brown coal? | Lignite |
8 | Which one of the following is not a coal variety? | Dolomite |
9 | The Iron ORE which contains 72% of Iron is - | Magnetite |
10 | Which one of the following is an iron ore? | Magnetite |
11 | Which one of the following Mineral does not contains oxygen? | Cryolite |
12 | Which metal is protected by the layer of its own oxide? | Aluminum |
13 | The ore only two metals that are Non-Silver in colour, they are- | Copper and gold |
14 | Siderite is an ore of- | Iron |
15 | Which of the following process is used in the extraction of iron from the Iron ore? 72 0 | Reduction |
16 | Which one of the following metals cannot be used as an electromagnet? | Copper |
17 | Quartz is a type of | Silicon dioxide |
18 | Raw materials used in the manufacturing of glass are- | Soda, Lime Stone Silica Sand ash |
19 | Ruby and sapphire are the oxides of - Aluminum | |
20 | Which of the following is used in welding broken pieces of iron rails and parts of machine - | Aluminum Powder |
21 | Which one of the following does not present in the Stainless Steel? | Tungsten |
22 | The addition of Gypsum to Portland cement helps in- | Preventing rapid settling of cement |
23 | Who discovered cement? | Joseph Aspdin |
24 | Air pollution by "Fly Ash" is caused by- | Cement industry |
25 | Cement is formed by strongly heating a Mixture of - | Lime Stone and clay |
26 | Cement is a mixture of - | Calcium Silicate and calcium aluminates |
27 | Which one of the following Metals is used to Heat up the electric iron? | Nichrome |
28 | Which of the following is strongest coagulant? | Aluminum Chloride (Alcl3) |
29 | The Base used as an antacid is - | Magnesium Hydroxide Mg(OH)2 |
30 | Which of the following metal is found in Free State? | Copper |
31 | Which one of the following is used in Pencils? | Graphite |
32 | In Graphite layers are held together by- | Vander wall forces |
33 | Which one among the following is Lubricant? | Graphite |
34 | One carat of Diamond is equal to- | 200 mg |
35 | Which of the following are properties is generally found in non-metals? | Brittleness |
36 | What is wood spirit? | Methyl Alcohol |
37 | Fire-Fighting cloths are made from- | Asbestos |
38 | The Gas Causes acid rain in an industrial area is- | Sulphur dioxide |
39 | Acid rain in the environment is caused by the Higher concentration of - | SO2 and NO2 |
40 | Which one of the following is used to dissolve noble metals? | Aqua regia |
41 | Aqua regia is a Mixture of the following in the ratio 1:3 by volume-0 65292 | Conc HNO3 and conc CHL |
42 | Sulphuric acid is - | Dibasic |
43 | Fullerene is a newly discovered crystalline carbon allotrope, contains- | 60 C atoms |
44 | Catalytic Converters are Generally Made from - | Transition Metals |
45 | The First Time atomic bomb was released at- | Hiroshima |
46 | Hydrogen Bomb is based upon the Principle of-72 | Uncontrolled Nuclear Fusion |
47 | Which type of reaction produces the most harmful radiation? | Fission |
48 | How many countries explode the atom bomb before India? | 5 |
49 | Chocolates nay Harmful to Health because they contains High quantity of - | Lead |
50 | Gun Powder was discovered by- | Roger beckon |
Comments
Post a Comment