1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following statement is not correct about diborane?

A
There are two 3-centre-2-eletron bonds.
B
The four terminal B-H bonds are two centre two electron bonds.
C
The four terminal Hydrogen atoms and the two Boron atoms lie in one plane.
D
Both the Boron atoms are sp2 hybridised.
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements

Statement I : The boiling points of the following hydrides of group 16 elements increases in the order -

H2O < H2S < H2Se < H2Te

Statement II : The boiling points of these hydrides increase with increase in molar mass.

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

A
Both Statement I and Statement II are correct
B
Both Statement I and Statement II are incorrect
C
Statement I is correct but Statement II is incorrect
D
Statement I is incorrect but Statement II is correct
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
Statement I : Acid strength increases in the order given as HF << HCl << HBr << HI.

Statement II : As the size of the elements, F, Cl, Br, I increases down the group, the bond strength of HF, HCl, HBr and HI decreases and so the acid strength increases.

In the light of the above statements, choose the correct answer from the options given below.
A
Statement I is incorrect but Statement II is true.
B
Both Statement I and Statement II are true.
C
Both Statement I and Statement II are false.
D
Statement I is correct but Statement II is false.
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
A
Noble gases have large positive values of electron gain enthalpy
B
Noble gases are sparingly soluble in water
C
Noble gases have very high melting and boiling points
D
Noble gases have weak dispersion forces
NEET Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12