Everyday Science MCQS Set-14 for preparation.
For which Diode is used:
A. Purification
B. Modulation
C. Oscillation
D. Amplification
Which organic compound is used to remove stains of iron compounds?
A. Benzoic acid
B. Oxalic acid
C. Cinnamic acid
D. Phthalic acid
‘Cryogenics’ is a science dealing with:
A. Low temperature
B. High temperature
C. Growth of crystal
D. Friction and wear
Bleaching powder is used in drinking water as a:
A. Disinfectant
B. Coagulant
C. Antibiotic
D. Antiseptic
Fleming’s right hand rule is used to find the direction of the:
A. Direct current
B. Alternate current
C. Actual current
D. Induced current
A person is hurt on kicking a stone due to:
A. Velocity
B. Inertia
C. Reaction
D. Momentum
Curie it is the temperature at which:
A. A metal loses conductivity
B. A metal loses magnetic property
C. Matter becomes radioactive
D. Transmutation of metal occurs
What happens when a chemical bond is formed?
A. Energy is always absorbed
B. Energy is always released
C. More energy is released than is absorbed
D. Energy is neither released nor absorbed
When a bar magnet is cut into two equal halves, the pole strength of each piece:
A. Becomes zero
B. Remains the same
C. Becomes half
D. Becomes double
Lightning is caused due to:
A. Electric power
B. Electric pressure
C. Electric leakage
D. Electric discharge
The plastic material commonly used for making gear wheels is:
A. Nylons
B. Polyesters
C. Polystyrene
D. Bakelite
Which is used to iodize common salt?
A. Iodine
B. Sodium iodide
C. Potassium iodide
D. Potassium iodate
What is the most commonly used substance in fluorescent tubes?
A. Mercury oxide and neon
B. Sodium vapour and neon
C. Sodium oxide and argon
D. Mercury vapour and argon
Formation of Ozone hole is maximum over:
A. India
B. Europe
C. Antarctica
D. Africa
Saccharin is made up of:
A. Butane
B. Propane
C. Phenol
D. Toluene
Which of the following metals form an amalgam with other metals?
A. Lead
B. Tin
C. Zinc
D. Mercury
Which compound is commonly used as an antiseptic in mouth washes and toothpaste?
A. Saltpeter
B. Sodium chloride
C. Borax
D. Hydrogen peroxide
Type metal used in printing press is an alloy of:
A. Lead and copper
B. Lead and zinc
C. Lead and bismuth
D. Lead and antimony
In electro-refining, the pure metal depicted on:
A. Cathode
B. Anode
C. Vessel
D. Electrolyte
Which is not an anesthetic agent in surgical operations?
A. Ether
B. Chloroform
C. Acetone
D. Nitrous oxide
Sweat contains water and:
A. Vinegar
B. Salt
C. Lactic acid
D. Citric acid
Radiations which is not emitted during radioactivity is:
A. a rays
B. B rays
C. y rays
D. Cathode rays
The compound that has the least value for Octane number is:
A. n-heptane
B. Iso-octane
C. 2-methyl heptane
D. 2, 2-dimethyl hexane
The wire of flash bulbs is made up of:
A. Ba
B. Ag
C. Mg
D. Cu
Formula of the Magnetite is:
A. Fe3O4
B. Fe2O3
C. Fe Co3
D. 2Fe2O3.H2O
The degree of dissociation of an electrolyte depends on:
A. Atmospheric pressure
B. Dilution
C. Impurities
D. Method of dissolution
An example of heterocyclic compound is:
A. Furan
B. Benzene
C. Anthracene
D. Naphthalene
Sulphuric acid is:
A. Tribasic
B. Dibasic
C. Monobasic
D. Tetrabasic
The filter over which sewage is sprinkled is called as:
A. Contact bed
B. Percolating filter
C. Trickling filter
D. Intermittent filter
Iodine value is used to estimate:
A. Alkali content in oil
B. Unsaturation in oil
C. Hydroxyl groups in oil
D. Carboxylic groups in oil
Benzene cannot undergo:
A. Oxidation reaction
B. Substitution reaction
C. Addition reaction
D. Elimination reaction
Radioactive elements emit:
A. Ultraviolet waves
B. Infrared waves
C. Radio waves
D. a, B, y radiations
Sulphur Dioxide level in the atmosphere can be replaced by using:
A. Low-Sulphur fuels
B. More efficient car engines
C. Catalytic converters in the industry
D. Static electricity to attract it in factory chimneys
The enormous amount of energy released in an explosion of an atom bomb is due to the:
A. Conversion of neutrons into protons
B. Conversion of mechanical energy into nuclear energy
C. Conversion of mass into energy
D. Conversion of chemical energy into heat energy
The manufacture of iron from iron ore involves the process of:
A. Oxidation
B. Reduction
C. Electrolysis
D. Fractional distillation
The function of sedimentation tank in Sewage treatment is to:
A. Aerate the sewage
B. Remove water content
C. Disinfect the sewage
D. Remove suspended solids
If lime water is kept in the air, it turns milky due to presence of:
A. Nitrogen
B. Oxygen
C. Sulphur dioxide
D. Carbon dioxide
Which processes is used for the production of Biodiesel?
A. Translation
B. Transcription
C. Transamination
D. Transesterification
Wood Spirit is known as:
A. Ethyl alcohol
B. Butyl alcohol
C. Methyl alcohol
D. Propyl alcohol
A powerful eye irritant present in smog is:
A. Carbon dioxide
B. Sulphur dioxide
C. Nitric oxide
D. Peroxyacetyl nitrate