1
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Which one among the following metals is the weakest reducing agent?

A
K
B
Na
C
Li
D
Rb
2
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 : Carbon forms two important oxides - CO and CO$$_2$$. CO is neutral whereas CO$$_2$$ is acidic in nature

Reason R : CO$$_2$$ can combine with water in a limited way to form carbonic acid, while CO is sparingly soluble in water

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
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 correct but R is not correct
3
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

'A' in the given reaction is

JEE Main 2023 (Online) 25th January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 32 English

A
JEE Main 2023 (Online) 25th January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 32 English Option 1
B
JEE Main 2023 (Online) 25th January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 32 English Option 2
C
JEE Main 2023 (Online) 25th January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 32 English Option 3
D
JEE Main 2023 (Online) 25th January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 32 English Option 4
4
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

When the hydrogen ion concentration [H$$^+$$] changes by a factor of 1000, the value of pH of the solution __________

A
decreases by 2 units
B
increases by 2 units
C
decreases by 3 units
D
increases by 1000 units
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