Objective questions and answers on Metals and Non metals:
Ques. Which of the following statements is true?
(a) Metals do not possess lusture
(b) Mercury is not sensitive to heal changes
(c) Metalloids possess characteristics of both metals and non-metals
(d) Most of the elements known are non-metals
Ques. The non metal form that can conduct electricity is:
Ques. The property of metals due to which they can be drawn into wires is called _____.
Ques. Which of the following metals have low tensile strength?
(d) Both (b) and (C)
Ques. Why is it that we never find bells made up of wood?
(a) Wooden bells are expensive
(b) Wood is not sonorous
(c) Wood is ductile
(d) None of these
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Ques. Metal rich mineral found in nature is ________.
Ques. The percentage of gold present in 20 carat gold Is –
Ques. Most abundunt element upon the earth is ________.
Ques. Which is most reactive metal?
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Ques. The most abundant metal in earth’s crust is:
Ques. Which of these is the hardest?
Ques. The non metal which exist in liquid state at room temperature is:
Ques. Which metal is stored in kerosene oil?
Ques. Zirconium metal is used in making bullet proof alloy of ______.
Ques. Which of the following non-metals is found in liquid state at room temperature?
(d) Both (a) and (c)
Ques. Chips packets are filled with an inactive gas, which prevents the spoilage of chips. the gas is…..
(b) Carbon dioxide
Ques. Which of the following scientists classified elements into metals and non-metals?
(c) Humphry Davy
(d) J.J. Priestly
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Ques. Chromium & Nickel metals are used for
(a) Stainless steel
Ques. Which is good conductor of electricity?
Ques. The natural materials in which the metals or their compounds are found in earth’s crust are called:
Ques. Which of the following metal found free in nature?
Ques. The metal that occurs in free state in the earth’s crust is:
(d) all the above
Ques. The metal which is stored in kerosene:
Ques. Iodine is used as an antiseptic in the form of ______ solution.
Ques. Which of the following metal has highest melting point?
Ques. Metal which occurs in free state as well as in combined state is ____.
Ques. A metal and non-metal element are likely to combine to form ____ bond.
(d) polar covalent
Ques. The second most abundant non metal in earth’s crust is:
Ques. Metal which is used to make jewellery :
(d) both (b) and (c)
Ques. Ornaments are usually made up of ______ gold.
(a) 24 Carat
(b) 22 carat
(c) 28 carat
Ques. Edible common salt contains
Ques. Aluminium is good conductor of heat, so it used in preparation of
(c) Electric wire
(d) All the above
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Ques. Common brass is an alloy of
(a) Cu and Tin
(b) Tin and Zinc
(c) Copper and zinc
(d) Bronze and lead
Ques. The non-metal which is liquid at room temperature is:
Ques. Plastic bags (carry bags) are made from polyethene which are ______
(a) Semi conductors
(d) Semi solids
Ques. Metals are good conductors of electricity, because
(a) They are malleable.
(b) They are ductile.
(c) They have free electrons in their outermost shell.
(d) They show elasticity and plasticity.
Ques. Identify the metalloid from the following: