Magma that is more granitic tends to be very explosive because
(a) of relatively higher water content
(b) of relatively higher gases content
(c) of relatively lower water content
(d) of relatively lower gases content
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Nitrogen is relatively inactive element because
(d) N2 molecule contains triple bond between N atoms having very high dissociation energy (946 kJ mol–1) due to which it is relatively inactive.
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Electronegativity of oxygen is more than sulphur yet H2S is acidic while water is neutral. This is because (a) water is highly associated compound
(d) SH–bond is weaker than, O–H bond. Hence H2 S will furnish more H+ ions
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The rock which is made up of molten magma is
The correct answer is: (a) Igneous
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Which one of the following is used as an explosive? (a) Phosphorus trichloride (b) Mercuric oxide
(d) Nitroglycerine (NG) also known as nitroglycerine, trinitroglycerin, trinitroglycerine, 1,2,3- trinitroxypropane and glyceryl trinitrate is a heavy, colorless, oily, explosive liquid obtained by nitrating glycerol. Alfred Nobel discovered that mixing...
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When a current carrying conductor is placed perpendicular to a magnetic field, it tends to move
(c) perpendicular to the field as well as itself
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Albedo effect would be relatively higher in (a) early morning and late evening
(a) Albedo also varies according to the angle of incidence of the Sun Raysbeing higher for slating rays and lower for vertical or nearly vertical rays. From this we can...
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The population of an insect species shows an explosive increase in numbers during rainy season
(b) its population growth curve is of J-type
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As we proceed from equator to poles, the daily range of temperature tends to (a) decrease (b) increase
(a) The daily range of temperature decreases on,proceeding equator to poles.
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Consider the following statement According to the Malthusion model 1. Population tends to increase arithmetically.
(c) 2, 3 and 4 are correct
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Primary productivity of the open oceans is very limited because of (a) the shortage of water.
(c) the shortage of nutrients.
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