1
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The correct order of the first ionisation enthalpies of the following elements is

A

$\mathrm{Li}<\mathrm{B}<\mathrm{Be}<\mathrm{N}$

B

$\mathrm{Li}<\mathrm{Be}<\mathrm{B}<\mathrm{N}$

C

$\mathrm{N}<\mathrm{Be}<\mathrm{B}<\mathrm{Li}$

D

$\mathrm{N}<\mathrm{B}<\mathrm{Be}<\mathrm{Li}$

2
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The correct order of $\mathrm{C}-\mathrm{O}$ bond length is

A

$\mathrm{CO}_3^{2-}<\mathrm{CO}_2<\mathrm{CO}$

B

$\mathrm{CO}_2 \leqslant \mathrm{CO}_3^{2-}<\mathrm{CO}$

C

$\mathrm{CO}<\mathrm{CO}_3^{2-}<\mathrm{CO}_2$

D

$\mathrm{CO}<\mathrm{CO}_2<\mathrm{CO}_3^{2-}$

3
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

How many of the following species have the bond order 2? $\mathrm{C}_2, \mathrm{~B}_2^{2-}, \mathrm{N}_2^{2+}, \mathrm{CN}^{+}, \mathrm{NO}^{-}, \mathrm{O}_2, \mathrm{C}_2^{+}$

A

3

B

4

C

6

D

5

4
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Gases deviate from ideal behaviour at high pressures because the gas molecules

A

attract each other

B

repel each other

C

show Brownian motion

D

obey Tyndall effect

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