Science : Ch 03 – Metals and Non-metals

Which of the subsequent quality is generally not shown by metals?

Which of the subsequent oxide(s) of iron would be obtained on prolonged reaction of iron with steam?

Which of the following is not a property of ionic compounds ?

Generally, metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?

Which among the following Declaration is incorrect for magnesium metal?

Shwetha took three beakers A, B and C containing zinc sulphate, silver sulphate and iron (II) sulphate solutions respectively. Copper pieces were added to each beaker. The solution will Become visible blue in the case of:

The metals that float when dealt with water are:

The poorest conductor of heat among metals is

2 ml each of conc. HCl, HNO₃, and a mixture of conc. HCl and conc. HNO3 in the ratio of 3:1 were taken in test tubes labelled as : A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C. The metal could be:

1. AI
2. Au
3. Cu
4. Pt

Hydrogen gas is not evolved when a metal reacts with nitric acid because

Which metal can be displaced by copper from its salt solution?

Why should we not throw small pieces of sodium into a sink in the laboratory? Because of

Give the formula of the stable binary compounds that would be formed by the combination of following pair of elements: Al and Cl₂

Name two metals having melting point less than 310 K (37°C).

which metal is more reactive?