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Quiz 22
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Q.1
The chemical name of 'laughing gas' is
Nitric oxide
Nitrogen dioxide
Nitrogen pentoxide
Nitrous oxide
Q.2
Gypsum is used for improvement of:
Alkaline soils
Saline soils
Podsols
Acidic soils
Q.3
The metal compound commonly found in Sindhoor or Kumkum is based on
Tin
Lead
Copper
Zinc
Q.4
Aspirin is common name of
Salicylic Acid
Salicylate
Methyl Salicylate
Acetyl Salicylic Acid
Q.5
When conc. H
2
SO
4
is added to dry KNO
3
, brown fumes are evolved. These fumes are due to
SO
3
SO
2
NO
2
N
2
O
Q.6
Iodex, a pain relief balm, has the smell of ________ .
Methyl salicylate
Ethyl salicylate
Propyl salicylate
Butyl salicylate
Q.7
Silver halides are used in photographic plates because they are
Oxidised in air
Soluble in hyposolution
Reduced by light
Totally colourless
Q.8
The compound to which H
2
does not add is
Biphenyl ethylene
Tetraphenyl ethylene
Tetra – a –naphthylethylene
Tetra –9 – phenanthrylethylene
Q.9
Which one is the most reactive halogen?
Iodine
Bromine
Fluorine
Chlorine
Q.10
Which among the following is not a characteristic of transition metals?
Tendency to gain electrons
Low electronegativity
Low ionization energy
Malleability
Q.11
The most reactive among the halogens is
Fluorine
Chlorine
Bromine
Iodine
Q.12
DDT and BHC may act as
Allergens
Carcinogens
Asthematic agents
None of these
Q.13
Gunpowder consists of a mixture of
Sand and TNT
TNT and charcoal
Nitre, sulphur and charcoal
Sulphur, sand and charcoal
Q.14
The common refrigerant in domestic refrigerator is
Neon
Oxygen
Nitrogen
Freon
Q.15
This group of alumino-silicate minerals is widely used in making electrical insulators
Bauxite
Chromite
Manganese
Mica
Q.16
Commercial Vaseline is derived from
Plant gums
Coal tar
Wool wax
Petroleum
Q.17
Which one of the following pairs is not correctly matched?
Haematite : Copper
Bauxite : Aluminium
Monazite : Thorium
Pitchblende : Uranium
Q.18
KMnO
4
can be used as
Insecticide
Fertilizer
Pesticide
Disinfectant
Q.19
A detergent is a
Cleansing agent
Drug
Catalyst
Soap
Q.20
The ore of Aluminium is
Fluorspar
Bauxite
Chalco pyrites
Hematite
Q.21
Which of the following laser types is used in a laser printer?
Dye laser
Semiconductor laser
Excimer laser
Gas laser
Q.22
Substance used as an anti freeze in radiators of automobiles is :
Methyl alcohol and H
2
O
Methyl alcohol
Ethyl alcohol
Ethyl alcohol and H
2
O
Q.23
Which of the following is used to remove rust stains on cloth?
Kerosene
Lime
Oxalic acid solution
Petrol
Q.24
By-product obtained by soap industry is
Caustic soda
Glycerol
Naphthalene
Caustic potash
Q.25
Wax used for making candle is chemically a mixture of
Aliphatic hydrocarbons
Aromatic hydrocarbons
Cyclic hydrocarbons
Aliphatic and aromatic hydrocarbons
Q.26
Who developed Hydrogen Bomb?
Wernher Von Braun
J. Robert Oppen Heimer
Edward Teller
Samuel Cohen
Q.27
Which of the following is not a nitrogenous fertilizer ?
Ca(CN)
2
CaCN
2
NH
4
NO
3
Urea
Q.28
The pair of compounds used as anaesthetic in medicines :
Ether, Ammonia
Nitrous oxide, Chloroform
Chloroform, Nitrogen dioxide
Nitrogen dioxide, ether
Q.29
Who first published the periodic table?
John Dalton
Julius Lothar Meyer
Henry Moseley
Dmitri Mendeleev
Q.30
The most electronegative element among the following is
Fluorine
Sodium
Chlorine
Oxygen
Q.31
Total number of halogen elements found in the periodic table is
3
5
8
13
Q.32
Which one element has the lowest electronegativity value
Fluorine
Chlorine
Francium
Radium
Q.33
The chemical used in embalming biological materials is
Formaldehyde in water
Formaldehyde in methanol
Ethylene glycol
Gaseous formaldehyde
Q.34
Alum is used as
An analgesic
A fertilizer
A disinfectant
A purifier for water
Q.35
Which is not an anasthetic agent in surgical operations?
Chloroform
Ether
Nitrous oxide
Acetone
Q.36
Chloroform can be used as
Analgesic
Anaesthetic
Antimalarial
Antibiotic
Q.37
Soap helps in better cleaning of clothes because
Soap acts like catalyst
It reduces the surface tension of solution
It gives strength to solution
It absorbs the dirt
Q.38
Which one of the following contributes largely to the ‘green house effect’ ?
Ozone
Carbon monoxide
Carbon dioxide
Water vapour
Q.39
An important green-house gas other than methane being produced from the agricultural fields is
Nitrous oxide
Ammonia
Sulphur dioxide
Arsine
Q.40
Adding Cl
2
to benzene in the presence of AlCl
3
is an example of :
Elimination reaction
Substitution reaction
None of the options
Addition reaction
Q.41
Benzene cannot undergo :
Substitution
Addition
Elimination
Oxidation
Q.42
The most commonly used chemicals in the artificial rainmaking or cloud seeding are
Silver Iodide (AgI)
Sodium Chloride (NaCl)
Dry Ice (Frozen CO2)
All of the above
Q.43
Malathion is a/an
Insecticide
Fumigant
Preservative
Pesticide
Q.44
Laughing gas is
Nitric oxide
Nitrous oxide
Nitrogen trioxide
Nitrogen pentoxide
Q.45
Electric fuse is an alloy of
Tin and lead
Zinc and lead
Copper and iron
Carbon and tin
Q.46
Which of the following is used for refrigeration?
Sulphur dioxide
Chlorine
Freon
Phosphine
Q.47
The most suitable vessel for storing concentrated sulphuric acid is
Copper vessel
Aluminium vessel
Glass vessel
Earthen vessel
Q.48
Which one of the following nonmetals shows allotropy in the liquid state?
Carbon
Sulphur
Phosphorous
Bromine
Q.49
Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has
High bond dissociation energy
Smaller atomic radius
Stable half filled 2p sub level
High nuclear charge
Q.50
The elements with atomic numbers 9, 17, 35, 53, 85 are all
Heavy metals
Noble gases
Light metals
Halogens
0 h : 0 m : 1 s
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