Chemistry-
General
Easy
Question
Which is expected to conductor of electricity?
- Diamond
- Molten Sulpur
- Molten KCl
- Crystalline NaCl
The correct answer is: Molten KCl
Molten NaCl & KCl conduct electricity
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Which gives carbon with conc. H2SO4?
Which gives carbon with conc. H2SO4?
Chemistry-General
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Cryolite is :
Cryolite is :
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All ores are minerals while all minerals are not ores because:
All ores are minerals while all minerals are not ores because:
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Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
i)Ag
ii)Cu
iii)Na
iv)Al.
Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
i)Ag
ii)Cu
iii)Na
iv)Al.
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Galvanization is a method of protecting iron from rusting by coating with a thin layer of
Galvanization is a method of protecting iron from rusting by coating with a thin layer of
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Corrosion or rusting can be prevented by
Corrosion or rusting can be prevented by
Chemistry-General
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An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:
Chemistry-General
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Which of the following metals is protected by a layer of its own oxide?
Which of the following metals is protected by a layer of its own oxide?
Chemistry-General
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The correct decreasing order of the metals in the activity series is:
The correct decreasing order of the metals in the activity series is:
Chemistry-General
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The order of reactivity with oxygen is in the order
The order of reactivity with oxygen is in the order
Chemistry-General
Chemistry-
H2SO4 acts as dehydrating agent in its reaction with
H2SO4 acts as dehydrating agent in its reaction with
Chemistry-General
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When an aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that
When an aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that
Chemistry-General
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A student puts one big iron nail in four test tubes containing solutions of zinc sulphate, aluminium sulphate, copper sulphate and iron sulphate. A reddish brown coating was observed only on the surface of iron nail which was put in the solution of:
A student puts one big iron nail in four test tubes containing solutions of zinc sulphate, aluminium sulphate, copper sulphate and iron sulphate. A reddish brown coating was observed only on the surface of iron nail which was put in the solution of:
Chemistry-General
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The correct order of decreasing reactivity of Zn, Cu, Fe and Al is:
The correct order of decreasing reactivity of Zn, Cu, Fe and Al is:
Chemistry-General
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Generally non-metals are not lustrous. Which of the following non-metal is lustrous?
Generally non-metals are not lustrous. Which of the following non-metal is lustrous?
Chemistry-General
