1
JEE Main 2023 (Online) 24th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Which of the following is true about freons?

A
These are radicals of chlorine and chlorine monoxide
B
These are chemicals causing skin cancer
C
All radicals are called freons
D
These are chlorofluorocarbon compounds
2
JEE Main 2023 (Online) 24th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Match List I with List II

List-I
List-II
A. Chlorophyll I. $$\mathrm{Na_2CO_3}$$
B. Soda ash II. $$\mathrm{CaSO_4}$$
C. Dentistry, Ornamental work III. $$\mathrm{Mg^{2+}}$$
D. Used in white washing IV. $$\mathrm{Ca(OH)_2}$$

Choose the correct answer from the options given below :

A
A-III, B-I, C-II, D-IV
B
A-II, B-III, C-IV, D-I
C
A-II, B-I, C-III, D-IV
D
A-III, B-IV, C-I, D-II
3
JEE Main 2023 (Online) 24th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The primary and secondary valencies of cobalt respectively in $$\mathrm{[Co(NH_3)_5Cl]Cl_2}$$ are :

A
2 and 8
B
2 and 6
C
3 and 5
D
3 and 6
4
JEE Main 2023 (Online) 24th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

'A' and 'B' formed in the following set of reactions are :

JEE Main 2023 (Online) 24th January Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 33 English

A
JEE Main 2023 (Online) 24th January Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 33 English Option 1
B
JEE Main 2023 (Online) 24th January Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 33 English Option 2
C
JEE Main 2023 (Online) 24th January Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 33 English Option 3
D
JEE Main 2023 (Online) 24th January Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 33 English Option 4
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