NTA JEE Main 17th March 2021 Shift 2
For the following questions answer them individually
NTA JEE Main 17th March 2021 Shift 2 - Question 41
For the coagulation of a negative sol, the species below, that has the highest flocculating power is:
NTA JEE Main 17th March 2021 Shift 2 - Question 42
Match List-I and List-II:
List-IÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â List-II
a. Haematite                      i. Al$$_2$$O$$_3$$ . xH$$_2$$O
b. Bauxite                        ii. Fe$$_2$$O$$_3$$
c. Magnetite                      iii. CuCO$$_3$$ . Cu(OH)$$_2$$
d. Malachite                       iv. Fe$$_3$$O$$_4$$
Choose the correct answer from the options given below:
NTA JEE Main 17th March 2021 Shift 2 - Question 43
The set that represents the pair of neutral oxides of nitrogen is:
NTA JEE Main 17th March 2021 Shift 2 - Question 44
The common positive oxidation states for an element with atomic number 24, are:
NTA JEE Main 17th March 2021 Shift 2 - Question 45
Match List-I with List-II:
List-IÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â List-II
a. [Co(NH$$_3$$)$$_6$$][Cr(CN)$$_6$$]Â Â Â Â Â Â Â Â Â i. Linkage isomerism
b. [Co(NH$$_3$$)$$_3$$(NO$$_2$$)$$_3$$]Â Â Â Â Â Â Â ii. Solvate isomerism
c. [Cr(H$$_2$$O)$$_6$$]Cl$$_3$$Â Â Â Â Â Â Â Â Â Â Â Â Â Â iii. Co-ordination isomerism
d. $$cis$$-[CrCl$$_2$$(ox)$$_2$$]$$^{3-}$$Â Â Â Â Â Â Â Â iv. Optical isomerism
Choose the correct answer from the options given below:
NTA JEE Main 17th March 2021 Shift 2 - Question 46
In the above reaction, the structural formula of (A), "X" and "Y" respectively are:
NTA JEE Main 17th March 2021 Shift 2 - Question 47
Primary, secondary and tertiary amines can be separated using:
NTA JEE Main 17th March 2021 Shift 2 - Question 48
Match List-I with List-II:
List-I (Chemical Compound)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â List-II (Used as)
a. Sucralose                           i. Synthetic detergent
b. Glyceryl ester of stearic acid            ii. Artificial sweetener
c. Sodium benzoate                     iii. Antiseptic
d. Bithional                           iv. Food preservative
Choose the correct match:
NTA JEE Main 17th March 2021 Shift 2 - Question 49
Fructose is an example of:
NTA JEE Main 17th March 2021 Shift 2 - Question 50
In the above reactions, the enzyme A and enzyme B respectively are:
