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Which of the following property is generally not shown by metals?
The ability of metals to be drawn into thin wire is known as
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same? (i) Good thermal conductivity (ii) Good electrical conductivity (iii) Ductility (iv) High melting point
Which one of the following metals do not react with cold as well as hot water?
Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?
What happens when calcium is treated with water? (i) It does not react with water (ii) It reacts violently with water (iii) It reacts less violently with water (iv) Bubbles of hydrogen gas formed stick to the surface of calcium
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)?
The composition of aqua-regia is
Which of the following are not ionic compounds? (i) KCl (ii) HCl (iii) CCl4 (iv) NaCl
Which one of the following properties is not generally exhibited by ionic compounds?
Which of the following metals exist in their native state in nature? (i) Cu (ii) Au (iii) Zn (iv) Ag
following metals are refined by electrolytic refining? (i) Au (ii) Cu (iii) Na (iv) K
Silver articles become black on prolonged exposure to air. This is due to the formation of
Galvanisation is a method of protecting iron from rusting by coating with a thin layer of
Stainless steel is very useful material for our life. In stainless steel, iron is mixed with
If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of
Generally, metals are solid in nature. Which one of the following
Which of the following metals are obtained by electrolysis of their chlorides in molten state ? (i) Na (ii) Ca (iii) Fe (iv) Cu
Generally, non-metals are not lustrous. Which of the following non- metal is lustrous?
2 mL each of concentrated HCl, HNO3 and a mixture of concentrated HCl and concentrated 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 respectively. The metal could be
An alloy is
An electrolytic cell consists of (i) positively charged cathode (ii) negatively charged anode (iii) positively charged anode (iv) negatively charged cathode
During electrolytic refining of zinc, it gets
An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following
Alloys are homogeneous mixtures of a metal with a metal or non- metal. Which among the following alloys contain non-metal as one of its constituents?
Which among the following statements is incorrect for magnesium metal?
Which among the following alloys contain mercury as one of its constituents?
Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?
The electronic configurations of three elements X, Y and Z are X — 2, 8; Y — 2, 8, 7 and Z — 2, 8, 2. Which of the following is correct?
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?
Electrical wires have a coating of an insulting material. The material, generally used is
Which of the following non-metals is a liquid?
Which of the following can undergo a chemical reaction?
