1
JEE Main 2022 (Online) 28th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following statement is incorrect?

A
Low solubility of LiF in water is due to its small hydration enthalpy.
B
$$\mathrm{KO}_{2}$$ is paramagnetic.
C
Solution of sodium in liquid ammonia is conducting in nature.
D
Sodium metal has higher density than potassium metal.
2
JEE Main 2022 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

An element A of group 1 shows similarity to an element B belonging to group 2. If A has maximum hydration enthalpy in group 1 then B is :

A
Mg
B
Be
C
Ca
D
Sr
3
JEE Main 2022 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following enhances the lathering property of soap?

A
Sodium stearate
B
Sodium carbonate
C
Sodium rosinate
D
Trisodium phosphate
4
JEE Main 2022 (Online) 26th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The metal that has very low melting point and its periodic position is closer to a metalloid is

A
Al
B
Ga
C
Se
D
In
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