NTA JEE Main 18th March 2021 Shift 2
For the following questions answer them individually
NTA JEE Main 18th March 2021 Shift 2 - Question 41
A hard substance melts at high temperature and is an insulator in both solid and in molten state. This solid is most likely to be a / an :
NTA JEE Main 18th March 2021 Shift 2 - Question 42
The charges on the colloidal CdS sol and TiO$$_2$$ sol are, respectively :
NTA JEE Main 18th March 2021 Shift 2 - Question 43
Match list-I with list-II :
| Â Â List-I | Â Â List-II | |
|---|---|---|
| (a)Â Â Mercury | Â Â (i) | Â Â Vapour phase refining |
| (b)Â Â Copper | Â Â (ii) | Â Â Distillation refining |
| (c)Â Â Silicon | Â Â (iii) | Â Â Electrolytic refining |
| (d)Â Â Nickel | Â Â (iv) | Â Â Zone refining |
Choose the most appropriate answer from the option given below:
NTA JEE Main 18th March 2021 Shift 2 - Question 44
The secondary valency and the number of hydrogen bonded water molecule(s) in CuSO$$_4$$ . 5H$$_2$$O, respectively, are :
NTA JEE Main 18th March 2021 Shift 2 - Question 45
Main Products formed during a reaction of 1-methoxy naphthalene with hydroiodic acid are:
NTA JEE Main 18th March 2021 Shift 2 - Question 46
Consider the above reaction, the product X and Y respectively are :
NTA JEE Main 18th March 2021 Shift 2 - Question 47
In the reaction of hypobromite with amide, the carbonyl carbon is lost as:
NTA JEE Main 18th March 2021 Shift 2 - Question 48
An organic compound A on treatment with benzene sulfonyl chloride gives compound B. B is soluble in dil. NaOH solution. Compound A is :
NTA JEE Main 18th March 2021 Shift 2 - Question 49
Match List - I with List - II :
| List-I (Class of Chemicals) | List-II (Example) | |
|---|---|---|
| (a) Antifertility drug | (i) | Meprobamate |
| (b) Antibiotic | (ii) | Alitame |
| (c) Tranquilizer | (iii) | Norethindrone |
| (d) Artificial Sweetener | (iv) | Salvarsan |
NTA JEE Main 18th March 2021 Shift 2 - Question 50
Deficiency of vitamin K causes :
