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15 questions
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?
Has high melting point
Has low melting point
Conducts electricity in molten state
Occurs as solid
The electronic configurations of three ele¬ments X, Y and Z are X — 2, 8; Y — 2, 8, 7 and Z — 2, 8, 2. Which’of the following is correct?
X is a metal
Y is a metal
Z is a non-metal
Y is a non-metal and Z is a metal
Which one of the following metals do not react with cold as well as hot water?
Na
Ca
Mg
Fe
Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?
FeO
Fe2O3
Fe3O4
Fe2O3 and Fe3O4
Which of the following are not ionic compounds?
(i) KCl
(ii) HCl
(iii) CCl4
(iv) NaCl
(i) and (ii)
(ii) and (iii)
(iii) and (iv)
(i) and (iii)
Which one of the following four metals would be displaced from the solution of its salts by other three metals ?
Mg
Ag
Zn
Cu
Although metals form basic oxides, which of the following metals form an amphoteric oxide ?
Na
Ca
Al
Cu
Which of the following metals catch fire on reaction with air?
Magnesium
Manganese
Potassium
Calcium
Metals, except Al and Zn, react with oxygen to form _______ oxides.
acidic
neutral
amphoteric
basic
The property of metals by which it can be drawn into wires is
Malleability
Sonority
Lustrous
Ductility
The property of metals by which they can be beaten in to thin sheets is called
Sonority
Malleability
Ductility
None of the above
Non-metal used in purple colour solutions which is applied on wounds as an antiseptic
Iodine
Oxygen
Sulphur
Phosphorus
Hydrogen gas is not liberated when a metal reacts with HNO3. This is because
HNO3 is a
Weak oxidizing agent
Strong oxidizing agent
Weak reducing agent
Strong reducing agent
Observe the given information with respect to some elements and choose the correct name of the elements
Elements A B C D
Electrons K 2 2 2 2
L 8 8 6 8
M 1 8 0 4
N 0 1 0 0
A is Silicon, B is Sodium, C is Potassium
and D is Oxygen
A is Potassium, B is Oxygen, C is Sodium
and D is Silicon
A is Oxygen, B is Silicon, C is Potassium and
D is Sodium
A is Sodium, B is Potassium, C is Oxygen and D is Silicon
Metals react with acids to produce a gas
Carbon dioxide
Nitrogen
Hydrogen
Oxygen
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