NTA JEE Main 27th August 2021 Shift 1
For the following questions answer them individually
NTA JEE Main 27th August 2021 Shift 1 - Question 31
The unit of the van der Waals gas equation parameter 'a' in $$\left(P + \frac{an^2}{V^2}\right)(V - nb) = nRT$$ is:
NTA JEE Main 27th August 2021 Shift 1 - Question 32
In polythionic acid, H$$_2$$S$$_x$$O$$_6$$ ($$x$$ = 3 to 5) the oxidation state(s) of sulphur is/are:
NTA JEE Main 27th August 2021 Shift 1 - Question 33
Deuterium resembles hydrogen in properties but:
NTA JEE Main 27th August 2021 Shift 1 - Question 34
The number of water molecules in gypsum, dead burnt plaster and plaster of Paris, respectively are:
NTA JEE Main 27th August 2021 Shift 1 - Question 35
In which one of the following molecules strongest back donation of an electron pair from halide to boron is expected?
NTA JEE Main 27th August 2021 Shift 1 - Question 36
The gas 'A' is having very low reactivity reaches to stratosphere. It is non-toxic and non-flammable but dissociated by UV-radiations in stratosphere. The intermediates formed initially from the gas 'A' are:
NTA JEE Main 27th August 2021 Shift 1 - Question 37
Match List - I with List - II:
List-I (Property) List-II (Example)
(a) Diamagnetism (i) MnO
(b) Ferrimagnetism (ii) O$$_2$$
(c) Paramagnetism (iii) NaCl
(d) Antiferromagnetism (iv) Fe$$_3$$O$$_4$$
Choose the most appropriate answer from the options given below:
NTA JEE Main 27th August 2021 Shift 1 - Question 38
Tyndall effect is more effectively shown by:
NTA JEE Main 27th August 2021 Shift 1 - Question 39
Which refining process is generally used in the purification of low melting metals?
NTA JEE Main 27th August 2021 Shift 1 - Question 40
Match List - I with List - II:
List-I (Species) List-II (Number of lone pairs of electrons on the central atom)
(a) XeF$$_2$$ (i) 0
(b) XeO$$_2$$F$$_2$$ (ii) 1
(c) XeO$$_3$$F$$_2$$ (iii) 2
(d) XeF$$_4$$ (iv) 3
Choose the most appropriate answer from the options given below:
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