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1
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
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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
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Which of the following represents the correct order of metallic character of the given elements?

A
K < Mg < Be < Si
B
Si < Be < Mg < K
C
Be < Si < Mg < K
D
Be < Si < K < Mg
3
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
4
JEE Main 2023 (Online) 24th 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 : Beryllium has less negative value of reduction potential compared to the other alkaline earth metals.

Reason R : Beryllium has large hydration energy due to small size of Be$$^{2+}$$ but relatively large value of atomization enthalpy

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

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