1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Na2B4O7 $$\buildrel {heat} \over \longrightarrow $$ X + NaBO2

in the above reaction the product "X" is :

A
NaB3O5
B
H3BO3
C
B2O3
D
Na2B2O5
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

Match List-I with List-II.

List - I
(Hydrides)
List - II
(Nature)
(a) MgH$$_2$$ (i) Electron precise
(b) GeH$$_4$$ (ii) Electron deficient
(c) B$$_2$$H$$_6$$ (iii) Electron rich
(d) HF (iv) Ionic

Choose the correct answer from the options given below:

A
(a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)
B
(a) - (iii), (b) - (i), (c) - (ii), (d) - (iv)
C
(a) - (i), (b) - (ii), (c) - (iv), (d) - (iii)
D
(a) - (ii), (b) - (iii), (c) - (iv), (d) - (i)
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

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

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
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