Photochemical smog is a resultant of the reaction among:
Question: Photochemical smog is a resultant of the reaction among: (a) NO₂, O3 and peroxyacetyl nitrate in the presence of sunlight (b) CO, O₂ and peroxyacetyl nitrate in the presence
Quartzite is metamorphosed from-
Question: Quartzite is metamorphosed from- (a) Limestone (b) Plutonic rock (c) Sandstone (d) Shale Answer: (c) Sandstone
A sample of gas is to be identified by means of its behaviour in the presence of a glowing splint. Which of the following gases will neither itself burn nor cause the splint to burn?
Question: A sample of gas is to be identified by means of its behaviour in the presence of a glowing splint. Which of the following gases will neither itself burn
Addition of ethylene dibromide to petrol:
Question: Addition of ethylene dibromide to petrol: (a) Increase the octane number of fuel (b) Helps elimination of lead oxide (c) Removes the sulphur compound in petrol (d) Serves as
Nitric oxide pollution can lead to all of the following, except:
Question: Nitric oxide pollution can lead to all of the following, except: (a) Leaf spotting in plants (b) Bronchitis-related respiratory problems in human (c) Production of corrosive gases through photochemical
Which one of the following gases is supporter of combustion?
Question: Which one of the following gases is supporter of combustion? (a) Hydrogen (b) Nitrogen (c) Carbon dioxide (d) Oxygen Answer: (d) Oxygen
Which of the following are the two main constituents of granite?
Question: Which of the following are the two main constituents of granite? (a) Iron and silica (b) Iron and silver (c) Silica and aluminum (d) Iron oxide and potassium Answer
Minerals are deposited and accumulated in:
Question: Minerals are deposited and accumulated in: (a) Sedimentary rocks (b) Metamorphic rocks (c) Igneous rocks (d)None of the above Answer: (a) Sedimentary rocks
During the production of Yoghurt from Milk, the system is found to produce:
Question: During the production of Yoghurt from Milk, the system is found to produce: (a) Citric acid (b) Lactic acid (c) Formic acid (d) Acetic acid Answer: (b) Lactic
Which one among the following is not responsible for ‘greenhouse effect’?
Question: Which one among the following is not responsible for ‘greenhouse effect’? (a) Water (b) Carbon dioxide (c) Nitrogen (d) Chlorofluorocarbons Answer: (c) Nitrogen
Nosocomial infection is:
Question: Nosocomial infection is: (a) Acquired from ‘nose’ of humans (b) Acquired from nasal cavity of animals (c) Hospital acquired (d) An endemic disease Answer: (c) Hospital acquired
Which one of the following statements is not correct?
Question: Which one of the following statements is not correct? (a) In steady flow of a liquid, the velocity of liquid particles reaching at a particular points is the same
Which one of the following statements is not correct?
Question: Which one of the following statements is not correct? (a) Application of lime makes the soil acidic (b) High acidity in soil is typical of humid climate (c) Increasing
Which one of the following statements is correct?
Question: Which one of the following statements is correct? (a) Rutherford’s alpha-particle scattering experiment led to the discovery of electrons (b) J J Thomson suggested that the nucleus of an
The symbol of the element ‘Tungsten’ is:
Question: The symbol of the element ‘Tungsten’ is: (a) Ta (b) W (c) TI (d) Tc Answer: (b) W
In blood, platelets are required for:
Question: In blood, platelets are required for: (a) Transporting oxygen (b) Transporting carbon dioxide (c) Initiating blood clotting (d) Initiating degradation urea Answer: (c) Initiating blood clotting
To weld metals together, high temperature is required. Such a high temperature is obtained by burning:
Question: To weld metals together, high temperature is required. Such a high temperature is obtained by burning: (a) Acetylene in oxygen (b) LPG in oxygen (c) Methane in oxygen (d)
White phosphorous glows in the dark due to:
Question: White phosphorous glows in the dark due to: (a) Amorphous character (b) Slow oxidation (c) High ignition temperature (d) Good conducting property of electricity Answer: (b) Slow oxidation
The main constituent of Vinegar is:
Question: The main constituent of Vinegar is: (a) Acetic acid (b) Ascorbic acid (c) Citric acid (d) Tartaric acid Answer: (a) Acetic acid
Boric acid is an acid because its molecule:
Question: Boric acid is an acid because its molecule: (a) Accepts OH- from water releasing proton (b) Combines with proton from water molecule (c) Contains replaceable H+ ion (d) Gives
