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Quiz 19
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Q.1
An emulsifier is an agent which
Stabilises an emulsion
Aids the flocculation of an emulsion
Accelerates the dispersion
Homogenises an emulsion
Q.2
Which one of the following elements is least likely to be found in commercial fertilisers?
Nitrogen
Phosphorous
Potassium
Silicon
Q.3
The nuclear particle having no mass and no charge, but only spin is
Proton
Neutrino
Meson
Electron
Q.4
Ethanol containing 5% water is known as
Rectified spirit
Denatured spirit
Methylated alcohol
Power alcohol
Q.5
When there are two electrons in the same orbital, they have:
Same spin
Opposite spin
Same or opposite spin
No spin
Q.6
Which of the following acts as best adsorbent?
Charcoal
Activated Charcoal
Activated Coconut Charcoal
Carbon black
Q.7
Hamburger effect is otherwise known as–
Sodium pump
Anaerobic metabolism
Chloride shift
Respiratory product
Q.8
Yellow Cake an item of smuggling across border is
A crude from of heroin
A crude from of cocaine
Uranium oxide
Unreformed gold
Q.9
Silicon is used in
Solar energy devices
Semiconductors
Transistors
All of these
Q.10
The absolute temperature of a gas is doubled and the pressure is reduced to half, the volume of the gas
Remains unchanged
Will be doubled
Will increase four-fold
Will be reduced to half
Q.11
What do you understand by the term Espuma ?
Foam
Soap
Salt
Calcium
Q.12
Cloud is a colloidal dispersion of
Air in a dispersion medium of water
Fog in a dispersion medium of water
Mist in a dispersion medium of air
Water drops in a dispersion medium of air
Q.13
Which one of the following is not a fertilizer?
Ammonium sulphate
Calcium sulphate
Calcium ammonium nitrate
Potassium nitrate
Q.14
An inert gas mixed with oxygen given to patients suffering from restricted breathing is
Helium
Krypton
Radon
Argon
Q.15
Which of the following elements is obtained from seaweeds ?
Iodine
Vanadium
Argon
Sulphur
Q.16
Which one of the following statements is not correct? Vulcanisation of rubber makes it
Soft and flexible
Strong and hard
Chemical resistant
Withstand higher temperatures
Q.17
Muddy water is treated with alum in purification process, it is termed as :
Emulsification
Absorption
Adsorption
Coagulation
Q.18
Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ?
Eutrophication
Hardness
Alkalinity
Acidity
Q.19
The orientation of an atomic orbital is governed by
Principal quantum number
Magnetic quantum number
Spin quantum number
Azimuthal quantum number
Q.20
'Atomic theory' of matter was given by
Avogadro
Dalton
Newton
Pascal
Q.21
Alcohol prepared by the distillation of wood is :
Propyl alcohol
Methyl alcohol
Ethyl alcohol
Glycerol
Q.22
The antiparticle of an electron is
Positron
Proton
Alpha particles
Beta particles
Q.23
Nucleons are regarded as composites sub-particles known as
Mesons
Quarks
Leptons
Photons
Q.24
Gelatin is mostly used in making ice-creams in order to
Prevent making a colloid
Stabilise the colloid and prevent crystallisation
Stabilise mixture
Enrich the aroma
Q.25
The inert gas used as beacon light is
Kr
Ar
He
Ne
Q.26
The transuranium elements are the chemical elements with atomic numbers greater than
86
89
92
96
Q.27
Which of the following elements is non-radioactive ?
Uranium
Thorium
Plutonium
Zirconium
Q.28
Which of the inert gases can form compounds?
Helium
Xenon
Krypton
Argon
Q.29
Isobars are lines joining places having equal
Rainfall
Pressure
Population
Height above sea-level
Q.30
Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs?
Methane
Nitrogen
Helium
Hydrogen
Q.31
Silica gel is a
Moisturizer
Flavouring agent
Drying agent
Delicious food
Q.32
The compounds formed when hydrogen combines with p-block elements are called
Ionic hydrides
Molecular hydrides
Metallic hydrides
Polynuclear hydrides
Q.33
If the sewage is fully oxidized, the nitrogen is in the form of
Nitrites
Ammonia
Nitramines
Nitrates
Q.34
The most suitable unit for expressing nuclear radius is :
Nanometre
Fermi
Angstrom
Micron
Q.35
Conduction band electrons have more mobility than holes because they
Are lighter
Experience collision less frequently
Have negative charge
Need less energy to move them
Q.36
The noble gas used in radiotherapy is
Neon
Argon
Radon
Xenon
Q.37
Which of the following is used in dating archaeological findings ?
92
235
U
6
14
C
1
3
H
8
18
O
Q.38
Vulcanized rubber contains sulphur
2%
3-5%
7-9%
10-15%
Q.39
Silicon is a
Semiconductor
Insulator
Non-conductor
Conductor
Q.40
In vulcanisation process, rubber can be hardened by adding
Nitrogen
Silicon
Sulphur
Alcohol
Q.41
Seaweeds are important source of
Iron
Chlorine
Bromine
Iodine
Q.42
Which among the following is used as a catalyst in the production of high octane fuels?
HNO
3
H
2
SO
4
HCl
HF
Q.43
If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by
Mercury
Lead
Iron
Arsenic
Q.44
Extensively used nitrogenous fertilizer is
Ammonium nitrate
Urea
Ammonium sulphate
Nitro-lime
Q.45
The heat value of combustion of Gasoline is
12600 kJ/kg
14600 kJ/kg
39400 kJ/kg
47000 kJ/kg
Q.46
The total energy of revolving electron in an atom
Cannot be negative
Can have any value above zero
Can never be positive
Will always be positive
Q.47
The strongest acid of the following is
P-chlorophenol
M-nitrophenol
P-nitrophenol
O-nitrophenol
Q.48
The chief constituent of vinegar is
Formic acid
Acetic acid
Salycylic acid
Oxalic acid
Q.49
During fermentation of sugar, the compound which is always formed is :
Methyl Alcohol
Ethyl Alcohol
Acetic Acid
Ethylene
Q.50
The metal ion present in Vitamin B12 is
Nickel
Cobalt
Iron
Zinc
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