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self evaluation test on s AND p-BLOCK ELEMENTS with answers., Exercises of Inorganic Chemistry

It contains objective and assertion- reason type questions with detailed solutions.

Typology: Exercises

2021/2022

Available from 05/24/2022

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830 s and p-Block Elements
1. Nitrogen can be obtained from air by removing
[AFMC 1998]
(a) Oxygen
(b) Hydrogen
(c) Carbon dioxide
(d) Both (a) and (c)
2.
2
SO
acts as temporary bleaching agent but
2
Cl
acts as permanent bleaching agent. Why [JEE Orissa 2004]
(a)
2
Cl
bleaches due to reduction but
2
SO
due to
oxidation
(b)
2
Cl
bleaches due to reduction but
2
SO
due to
reduction
(c) Both of these
(d) None of these
3. Caro's acid is [DCE 2002]
(a)
32SOH
(b)
523 OSH
(c)
52SOH
(d)
822 OSH
4. Inorganic benzene is [Pb. CET 2004]
(a)
333 NHB
(b)
(c)
363 NHB
(d)
633 NBH
5. Which of the following ions, will have maximum
hydration energy [Pb. CET 2003]
(a)
2
Sr
(b)
2
Ba
(c)
2
Ca
(d)
2
Mg
6. When orthophosphoric acid is heated to
,600 C
o
the product formed is [CBSE PMT 1989]
(a) Phosphine,
3
PH
(b) Phosphorus pentoxide,
52 OP
(c) Phosphorus acid,
33 POH
(d) Metaphosphoric acid,
3
HPO
7. The statement true for
3
N
is [AIIMS 2004]
(a) It has a non-linear structure
(b) It is called pseudohalogen
(c) The formal oxidation state of nitrogen in this
anion is -1
(d) It is isoelectronic with
2
NO
8.
2224 333 PONaHAOHNaOHP
here, 'A' is
[BVP 2004]
(a)
3
NH
(b)
3
PH
(c)
43 POH
(d)
33POH
9. A hydride of nitrogen which is acidic is [MP PMT 2004]
(a)
3
NH
(b)
22 HN
(c)
HN 3
(d)
42 HN
10. The ONO angle is maximum in [AIIMS 2004]
(a)
3
NO
(b)
2
NO
(c)
2
NO
(d)
2
NO
11. When ammonia is passed over heated
CuO
, it is
oxidised to [Roorkee 1992; BCECE 2005]
(a)
2
N
(b)
2
NO
(c)
ON 2
(d)
2
HNO
12. Slaked lime is used in the manufacture of[MNR 1985]
(a) Cement (b) Fire bricks
(c) Pigment (d) Medicine
13. Which of the following is the most stable
[Roorkee Qualifying 1998]
(a)
2
Pb
(b)
2
Ge
(c)
2
Si
(d)
2
Sn
14. When
2
CO
is bubbled through a solution of
barium peroxide in water [AFMC 2005]
(a)
2
O
is released
(b) Carbonic acid is formed
(c)
22OH
is formed
(d) No reaction occurs
15. The lightest metal is [MP PET 2001]
(a)
Li
(b)
Mg
(c)
Ca
(d)
Na
16. Which of the following will not undergo
hydrolysis in water
[DPMT 2001]
(a) Ammonium sulphate
(b) Sodium sulphate
(c) Calcium sulphate
(d) All the salts will hydrolyse
17. The species that does not contain peroxide ion is
pf3
pf4

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1. Nitrogen can be obtained from air by removing

[AFMC 1998]

(a) Oxygen

(b) Hydrogen

(c) Carbon dioxide

(d) Both (a) and (c)

2

SO acts as temporary bleaching agent but

2

Cl

acts as permanent bleaching agent. Why [JEE Orissa 2004]

(a)

2

Cl bleaches due to reduction but

2

SO due to

oxidation

(b)

2

Cl bleaches due to reduction but

2

SO due to

reduction

(c) Both of these

(d) None of these

3. Caro's acid is [DCE 2002]

(a)

2 3

HSO (b)

3 2 5

HSO

(c)

2 5

HSO (d)

2 2 8

HSO

4. Inorganic benzene is [Pb. CET 2004]

(a)

3 3 3

BHN

(b)

3 3

BHNH

(c)

3 6 3

BHN (d)

3 3 6

HBN

5. Which of the following ions, will have maximum

hydration energy [Pb. CET 2003]

(a)

2 

Sr (b)

2 

Ba

(c)

2 

Ca (d)

2 

Mg

6. When orthophosphoric acid is heated to

600 C ,

o

the product formed is [CBSE PMT 1989]

(a) Phosphine,

3

PH

(b) Phosphorus pentoxide,

2 5

PO

(c) Phosphorus acid,

3 3

HPO

(d) Metaphosphoric acid,

3

HPO

7. The statement true for

3

N is [AIIMS 2004]

(a) It has a non-linear structure

(b) It is called pseudohalogen

(c) The formal oxidation state of nitrogen in this

anion is - 1

(d) It is isoelectronic with

2

NO

4 2 2 2

P  3 NaOH  3 HOA  3 NaHPO here, ' A ' is

[BVP 2004]

(a)

3

NH (b)

3

PH

(c)

3 4

HPO (d)

3 3

HPO

9. A hydride of nitrogen which is acidic is [MP PMT 2004]

(a)

3

NH

(b)

2 2

NH

(c) NH

3

(d)

2 4

NH

10. The ONO angle is maximum in [AIIMS 2004]

(a)

3

NO (b)

2

NO

(c)

2

NO (d)

2

NO

11. When ammonia is passed over heated CuO , it is

oxidised to [Roorkee 199

(a)

2

N

(b)

2

NO

(c) N O

2

(d)

2

HNO

12. Slaked lime is used in the manufacture of [MNR 1985]

(a) Cement (b) Fire bricks

(c) Pigment (d) Medicine

13. Which of the following is the most stable

[Roorkee Qualifying 1998]

(a)

2 

Pb (b)

2 

Ge

(c)

2 

Si (d)

2 

Sn

14. When

2

CO is bubbled through a solution of

barium peroxide in water [AFMC 2005]

(a)

2

O is released

(b) Carbonic acid is formed

(c)

2 2

HO is formed

(d) No reaction occurs

15. The lightest metal is [MP PET 2001]

(a) Li (b) Mg

(c) Ca (d) Na

16. Which of the following will not undergo

hydrolysis in water

[DPMT 2001]

(a) Ammonium sulphate

(b) Sodium sulphate

(c) Calcium sulphate

(d) All the salts will hydrolyse

17. The species that does not contain peroxide ion is

[DCE 2003]

(a)

2

PbO (b)

2 2

HO

(c)

2

SrO (d)

2

BaO

18. The number of hydroxide ions produced by one

molecule of sodium carbonate ( )

2 3

NaCO on

hydrolysis is

[AFMC 2000]

(a) 1 (b) 2

(c) 3 (d) 4

19. Lead is soluble in [BVP 2004]

(a) CHCOOH

3

(b)

2 4

HSO

(c) HCl

(d)

3

HNO

20. The difference of water molecules in gypsum and

plaster of paris is [CPMT 1997]

(a)

2

5

(b) 2

(c)

2

1

(d)

2

1

1

21. When burning magnesium ribbon is introduced

into a jar of oxygen, it produces [MH CET 1999]

(a)

Mg (b)

MgO

(c)

2

MgO (d)

2 2

MgO

22. Which of the following compounds transform

baking soda into baking powder [AIIMS 2001]

(a) KCl (b)

3

KHCO

(c)

3

NaHCO

(d)

4 4 6

KHCHO

23. Hydrated 3

AlCl is used as [RPET 2003]

(a) Catalyst in cracking of petroleum

(b) Catalyst in Friedel Craft reaction

(c) Mordant

(d) All of these

24. Which of the following ions has largest heat of

hydration

[MP PET 2001]

(a)

2 

Ba (b)

K

(c)

Li (d)

2 

Be

25. The hydroxides which sublime on heating are

[Roorkee 1999]

(a) LiOH (b) KOH

(c) RbOH (d)

2

Mg ( OH )

26. Electrolysis of KCl MgCl HO

2 2

.. 6 gives [KCET 1993]

(a) Mg Only

(b) Potassium only

(c) Mg and

2

Cl

(d) P and Mg

27. Which species does not exist [JIPMER 2000]

(a)

2 

6

( SiCl ) (b)

2 

6

( CCl )

(c)

2 

6

( GeCl ) (d)

2 

6

( SnCl )

2 3

AlO

formation involves evolution of a large

quantity of heat, which makes its use in [DPMT 2002]

(a) Deoxidiser

(b) Indoor photography

(c) Confectionary

(d) Thermite welding

29. Nitrates of all metals are [DCE 2000]

(a) Unstable (b) Stable

(c) Coloured (d) Soluble

30. The density of Neon will be highest at [JIPMER 2002]

(a) STP

(b)

0 C , 2

o

atmosphere

(c) 273 C , 1

o

atmosphere

(d) 273 C , 2

o

atmosphere

31. When chlorine water is exposed to sunlight the

colour change that occurs is [ Kerala (Med

(a) Colourless to brown

(b) Brown to colourless

(c) Light blue to colourless

(d) Colourless to greenish yellow

(e) Greenish yellow to colourless

32. Sodium nitrate  

3

NaNO decomposes above

C

o

~ 800 to give [IIT 1998]

(a)

2

N (b)

2

O

(c)

2

NO (d) NaO

2

2

N forms

3

NCl , whereas P can form both

5

PCl

and

5

PCl. Why [JEE Orissa 2004]

23. (c) Hydeated 3

AlCl in used as mordant.

24. (d)

   

BeLiBaK

2 2

decreasing order of heat of hydration.

25. (d)

2

Mg ( OH )

sublimes on heating.

26. (c) 2

Electroly sis

2 2

KCl. MgCl. 6 HO   Mg & Cl

KeK

 

; E V

o

 2. 93

MgeMg

 

2

; E V

o

 2. 37

Since, reduction potential of Mg

is higher.

Hence it gets reduced easily.

27. (b)

6

CCl does not exist because carbon has a

valancy of 4.

28. (a) In thermite welding large quantity of heat is

used which is evolved during

2 3

AlO

formation.

29. (b) Generally all metal nitrates are stable. 30. (b) Density of Neon will be highest as

C

o

0 , 2

atmosphere.

31. (e)

Colourless

Greenish yellow

2 2

ClHO Product

32. (a) 2 2 () 2 2

800

3

NaNO NaNO O g

C

o

  

33. (a) P has low lying 3 d orbitals, which can be used

for bonding, where as

2

N does not have low

lying 3 d orbitals.