1
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List I
Coordination entity
List II
Wavelength of light absorbed in nm
A. $$\mathrm{[CoCl(NH_3)_5]^{2+}}$$ I. 310
B. $$\mathrm{[Co(NH_3)_6]^{3+}}$$ II. 475
C. $$\mathrm{[Co(CN)_6]^{3-}}$$ III. 535
D. $$\mathrm{[Cu(H_2O)_4]^{2+}}$$ IV. 600

Choose the correct answer from the options given below :

A
A-IV, B-I, C-III, D-II
B
A-III, B-II, C-I, D-IV
C
A-III, B-I, C-II, D-IV
D
A-II, B-III, C-IV, D-I
2
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A chloride salt solution acidified with dil.HNO$$_3$$ gives a curdy white precipitate, [A], on addition of AgNO$$_3$$. [A] on treatment with NH$$_4$$OH gives a clear solution B. A and B are respectively :

A
$$\mathrm{H[AgCl_3]~\&~(NH_4)[Ag(OH)_2]}$$
B
$$\mathrm{AgCl~\&~[Ag(NH_3)_2]Cl}$$
C
$$\mathrm{H[AgCl_3]~\&~[Ag(NH_3)_2]Cl}$$
D
$$\mathrm{AgCl~\&~(NH_4)[Ag(OH)_2]}$$
3
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Butylated hydroxy anisole when added to butter increases its shelf life.

Reason R : Butylated hydroxy anisole is more reactive towards oxygen than food.

In the light of the above statements, choose the most appropriate answer from the options given below

A
A is correct but R is not correct
B
Both A and R are correct but R is NOT the correct explanation of A
C
Both A and R are correct and R is the correct explanation of A
D
A is not correct but R is correct
4
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : The alkali metals and their salts impart characteristic colour to reducing flame.

Reason R : Alkali metals can be detected using flame tests.

In the light of the above statements, choose the most appropriate answer from the options given below :

A
A is not correct but R is correct
B
A is correct but R is not correct
C
Both A and R are correct and R is the correct explanation of A
D
Both A and R are correct but R is NOT the correct explanation of A
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