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question_answer1)
Natural polymer present in wood pulp is:
A)
Rayon done
clear
B)
Cellulose done
clear
C)
Chlorophyll done
clear
D)
Silk done
clear
E)
None of these done
clear
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question_answer2)
Viscose is formed by dissolving:
A)
Wood pulp into a solution of hydrochloric acid. done
clear
B)
Wood pulp into sodium hydroxide solution. done
clear
C)
Wood pulp into sulphuric acid solution. done
clear
D)
Polyester into sodium hydroxide solution. done
clear
E)
None of these done
clear
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question_answer3)
Which one of the following is correct about nylon fibres?
A)
Nylon fibres are very strong. done
clear
B)
NyIon fibres absorb very little water. done
clear
C)
NyIon fibres are fairly elastic. done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer4)
Which one of the following is a thermosetting plastic?
A)
Teflon done
clear
B)
Melamine done
clear
C)
PVC done
clear
D)
Polyethene done
clear
E)
None of these done
clear
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question_answer5)
Which one of the following is also known as polytetrafluoroethylene?
A)
Bakelite done
clear
B)
Perspex done
clear
C)
Teflon done
clear
D)
Melamine done
clear
E)
None of these done
clear
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question_answer6)
Plastic buckets are preferred over iron buckets as they are:
A)
Light weight done
clear
B)
Non-reactive done
clear
C)
Resistant to corrosion done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer7)
Which one of the following is a property of plastics?
A)
Good Conductors of electricity. done
clear
B)
Good conductors of heat. done
clear
C)
Insoluble in water done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer8)
The most common form of ___ is sand.
A)
Carbon done
clear
B)
Nitrogen done
clear
C)
Silica done
clear
D)
Sodium done
clear
E)
None of these done
clear
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question_answer9)
_____ is used as a substitute for glass for making windows in aeroplanes.
A)
Melamine done
clear
B)
PVC done
clear
C)
Perspex done
clear
D)
Polyethene done
clear
E)
None of these done
clear
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question_answer10)
Nylon is used to make ropes because:
A)
It is wrinkle resistant. done
clear
B)
It is easy to wash. done
clear
C)
It is lustrous in appearance. done
clear
D)
It is very strong. done
clear
E)
None of these done
clear
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question_answer11)
Which one of the following will be flattened on beating with a hammer?
A)
Coal done
clear
B)
Sulphur done
clear
C)
Zinc done
clear
D)
Iodine done
clear
E)
None of these done
clear
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question_answer12)
Which one of the following is a metal?
A)
A graphite pencil lead done
clear
B)
A diamond ring done
clear
C)
A Carbon rod done
clear
D)
A silver coin done
clear
E)
None of these done
clear
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question_answer13)
Which one of the following is a non-metal?
A)
Chlorine done
clear
B)
Hydrogen done
clear
C)
Copper done
clear
D)
Both [a] and [b] done
clear
E)
None of these done
clear
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question_answer14)
Sulphur burns in air to make____.
A)
Basic oxide done
clear
B)
Acidic oxide done
clear
C)
Neutral oxide done
clear
D)
Acidic nitrate done
clear
E)
None of these done
clear
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question_answer15)
Which one of the following statements is incorrect?
A)
Sodium reacts with water to form sodium hydroxide. done
clear
B)
Sulphur reacts with water to form sulphuric acid. done
clear
C)
Zinc reacts with steam to produce hydrogen gas. done
clear
D)
Magnesium reacts with steam to give magnesium oxide. done
clear
E)
None of these done
clear
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question_answer16)
Which one of the following will not react with dilute hydrochloric acid?
A)
Aluminum done
clear
B)
Sodium done
clear
C)
Iron done
clear
D)
Silver done
clear
E)
None of these done
clear
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question_answer17)
Rahul wants to gift a glass ? painting to Ankita. The packaging of glass painting should be made of:
A)
Teflon done
clear
B)
PVC done
clear
C)
Polystyrene done
clear
D)
Melamine done
clear
E)
None of these done
clear
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question_answer18)
When acidic oxide of sulphur reacts with water it forms:
A)
Nitric acid done
clear
B)
Sulphuric acid done
clear
C)
Sulphurous done
clear
D)
Sulphur dioxide done
clear
E)
None of these done
clear
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question_answer19)
Choose the correct sequence of the metals in the increasing order of their reactivity.
A)
Cu < Pb < Ag < Na < K done
clear
B)
Ag < Pb < Cu < Na < K done
clear
C)
Ag < Cu < Pb < K < Na done
clear
D)
Ag < Cu < Pb < Na < K done
clear
E)
None of these done
clear
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question_answer20)
The gas produced when a metal reacts with dilute hydrochloric acid and burnt by producing a popping sound.
A)
Oxygen done
clear
B)
Carbon dioxide done
clear
C)
Hydrogen done
clear
D)
Nitrogen done
clear
E)
None of these done
clear
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question_answer21)
The substance that will be flattened on beating with a hammer is:
A)
Crystal of iodine done
clear
B)
Lump of sulphur done
clear
C)
Piece of coal done
clear
D)
Zinc granule done
clear
E)
None of these done
clear
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question_answer22)
Which one of the following groups is completely made of chemicals?
A)
Silk, Rayon, PVC done
clear
B)
Nylon, Wool, Acrylic done
clear
C)
Acrylic, Polyethene, Teflon done
clear
D)
PVC, Silk, Nylon done
clear
E)
None of these done
clear
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question_answer23)
Which two fibres combine to form terrycot?
A)
Nylon and Rayon done
clear
B)
Terylene and Terene done
clear
C)
Terylene and cotton done
clear
D)
Acrylic and cotton done
clear
E)
None of these done
clear
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question_answer24)
Main source of man-made plastics is:
A)
Biogas done
clear
B)
Crude oil done
clear
C)
Vegetable fibre done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer25)
Cords of electrical appliances and cables have a plastic coating because plastics are:
A)
Insoluble in water. done
clear
B)
Poor conductors of electricity. done
clear
C)
Heavy weight. done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer26)
Which of the following is a type of polyester?
A)
Terylene done
clear
B)
Terene done
clear
C)
Dacron done
clear
D)
All the above done
clear
E)
None of these done
clear
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question_answer27)
Rust is a/an:
A)
Acidic oxide done
clear
B)
Basic oxide done
clear
C)
Neutral oxide done
clear
D)
Basic nitrate done
clear
E)
None of these done
clear
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question_answer28)
In which of the following chemical reactions hydrogen gas will not produce?
A)
When sodium reacts with water. done
clear
B)
When zinc reacts with dilute hydrochloric acid. done
clear
C)
When copper reacts with dilute sulphuric acid. done
clear
D)
When aluminum reacts with sodium hydroxide. done
clear
E)
None of these done
clear
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question_answer29)
Which one of the following can displace magnesium from magnesium sulphate solution?
A)
Aluminium done
clear
B)
Zinc done
clear
C)
Iron done
clear
D)
Copper done
clear
E)
None of these done
clear
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question_answer30)
Which one of the following is used for making insulation for electric wires?
A)
Polythene done
clear
B)
PVC done
clear
C)
Teflon done
clear
D)
Melamine done
clear
E)
None of these done
clear
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question_answer31)
Which one of the following statements is correct?
(i) A more reactive metal can displace a less reactive metal from its salt solution. |
(ii) Copper can displace magnesium from its salt solution. |
(iii) Magnesium can displace copper from its salt solution, |
(iv) A less reactive metal can displace a more reactive metal from its salt solution. |
A)
(i) and (ii) done
clear
B)
(ii) and (iv) done
clear
C)
(i) and (iii) done
clear
D)
(iii) and (iv) done
clear
E)
None of these done
clear
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question_answer32)
____: hard non-metal : : _____ : soft metal.
A)
Graphite, Copper done
clear
B)
Diamond, Potassium done
clear
C)
Diamond, Sulphur done
clear
D)
Enamel, Sodium done
clear
E)
None of these done
clear
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question_answer33)
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
A)
Iron done
clear
B)
Sodium done
clear
C)
Gold done
clear
D)
Magnesium done
clear
E)
None of these done
clear
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question_answer34)
Which one of the chemical reactions is incorrect?
(i) \[Fe\,S{{O}_{4}}+Zn\to Zn\,S{{O}_{4}}+Fe\] |
(ii) \[Zn\,S{{O}_{4}}+Fe\to Fe\,S{{O}_{4}}+Zn\] |
(iii) \[2Au+2HCl\to 2Au\,\,Cl+{{H}_{2}}\] |
(iv) \[Mg+Cu\,S{{O}_{4}}\to Mg\,S{{O}_{4}}+Cu\] |
A)
(i) and (ii) done
clear
B)
(ii) and (iii) done
clear
C)
(iii) and (iv) done
clear
D)
(i) and (iv) done
clear
E)
None of these done
clear
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question_answer35)
Oxides of non-metals:
A)
Turn Red litmus to blue. done
clear
B)
Turn Blue litmus to red. done
clear
C)
Brings no change to the litmus paper. done
clear
D)
Turn lime water milky. done
clear
E)
None of these done
clear
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question_answer36)
A non-metal which catches fire on being exposed to air is:
A)
Mercury done
clear
B)
Magnesium done
clear
C)
Calcium done
clear
D)
Phosphorus done
clear
E)
None of these done
clear
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question_answer37)
A non-metal which is a good conductor of electricity.
A)
Hydrogen done
clear
B)
Sulphur done
clear
C)
Graphite done
clear
D)
Phosphorus done
clear
E)
None of these done
clear
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question_answer38)
Aluminum can displace __ from its salt solution.
A)
Magnesium done
clear
B)
Sodium done
clear
C)
Calcium done
clear
D)
Copper done
clear
E)
None of these done
clear
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question_answer39)
How well the substance can be hammered into sheets describes its:
A)
Ductility done
clear
B)
Luster done
clear
C)
Malleability done
clear
D)
Conductivity done
clear
E)
None of these done
clear
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question_answer40)
Which of the following metals reacts with cold water vigorously?
A)
Magnesium done
clear
B)
Silver done
clear
C)
Sodium done
clear
D)
Sulphur done
clear
E)
None of these done
clear
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