Match List I with List II
LIST I | LIST II | ||
---|---|---|---|
A. | Nitrogen oxides in air | I. | Eutrophication |
B. | Methane in air | II. | pH of rain water becomes 5.6 |
C. | Carbon dioxide | III. | Global warming |
D. | Phosphate fertilisers in water | IV. | Acid rain |
Choose the correct answer from the options given below :
Given below are two statement: one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$
Assertion A: $$5 \mathrm{f}$$ electrons can participate in bonding to a far greater extent than $$4 \mathrm{f}$$ electrons
Reason R: $$5 \mathrm{f}$$ orbitals are not as buried as $$4 \mathrm{f}$$ orbitals
In the light of the above statements, choose the correct answer from the options given below
A metal chloride contains $$55.0 \%$$ of chlorine by weight . $$100 \mathrm{~mL}$$ vapours of the metal chloride at STP weigh $$0.57 \mathrm{~g}$$. The molecular formula of the metal chloride is
(Given: Atomic mass of chlorine is $$35.5 \mathrm{u}$$)
Four gases A, B, C and D have critical temperatures $$5.3,33.2,126.0$$ and $$154.3 \mathrm{~K}$$ respectively. For their adsorption on a fixed amount of charcoal, the correct order is: