Popular Questions
- Which of the following is a characteristic of metals?
- A reactive metal (M) is treated with H2SO4 (dil).
- The composition of aqua-regia is
- Which of the following only contain non-metals?
- Which of the following is not a property of non-metals?
- Which of the following metal will not give H2(g) with H2O?
- Metals are refined by using different methods
- 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 it with a thin layer of
- An alloy is
- Assertion : Electrical wires cannot be made by copper. Reason : Copper is a bad conductor of electricity
- Assertion : When zinc is added to a solution of iron (II) sulphate, no change is observed. Reason : Zinc is less reactive than iro..
- Assertion : Food cans are coated with tin and not with zinc. Reason : Zinc is more reactive than tin
- Assertion : platinum, gold and silver are used to make jewellery. Reason : Plantinum, gold and silver are reactive least metals.
- Assertion : Carbon reacts with oxygen to form carbon dioxide which is an acidic oxide. Reason : Non-Metals form acidic oxides
- Name a metal which is non-lustrous and a Non-Metal which is lustrous.
- Which of the following metals will melt at body temperature (37°C).
- Name two metals which react with dil.HNO3 to evolve hydrogen gas
- Arrange the following metals in the decreasing order of reactivity Na, K, Cu and Ag.
- Although metals form basic oxides, name one metal which forms an amphoteric oxides
- Why is tungsten metal selected for making filaments of incandescent lamp bulbs?
- How do metals and Non-Metals combine?
- Name a solvent in which electrovalent compounds are soluble and a solvent in which they are in soluble.
- Name one metal which reacts neither with cold water, nor with hit water, but reacts with steam to produce hydrogen gas
- A piece of granulated zinc was dropped into copper sulphate solution
- A cleaned aluminium foil was placed in an aqueous solution of zinc sulphate
- Show the electron transfer in the formation of MgCL2 from its elements.
- Show the formation of MgO by the transfer of electrons in the two elements using electron dot structures. Or Atomic number of Mg ..
- Name one property which is not shown by ionic compounds
- Why does calcium float in water?
- Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining? Au, Cu, Na and ..
- What is anode mud?
- A green layer is gradually formed on a copper plate when left exposed to air for a week in a bathroom. What could this green subst..
- Name Two metals that are obtained by electrolysis of their chlorides in molten form.
- Name the metals which are usually alloyed with gold to make it harder.
- What is meant by 22 carat gold?
- Name any two alloys whose electrical conductivity is less than that of pure metals.
- Can rusting of iron nail occur in distilled water?
- Name an alloy that contains a non-metal as one of its constituents.
- Name an alloy which has mercury as one of its constituents.
