Chemistry 2nd Year Important Questions
FSC Chemistry 2nd Year Important Questions like MCQs, Short Questions and Long Questions from past papers.
2nd Year Chemistry Chapter 2 MCQs, Short and Long Questions
Chemistry 2nd Year Important Questions from chapter 2.
Unit Name: S-Block Elements
Total MCQs: 10
Total Short Questions: 5
Total Long Questions: 2
Total Marks: 40
Students of FSC can read and prepare online Chemistry 2nd Year Important Questions chapter wise.
S-Block Elements
Q.No.1 A). Each
question has four possible answers. Select the correct answer and circled it.
v
Which one of them is chemical
formula of chile salt or peter
(a) NaNO3 (b)
Na2CO3
(c)
KCl (d) KNO3
v
Which one of the following
element is found in bones, teeth, sea shell, egg shell
(a) Ca (b)
Mg
(c) Al (d) P
v
The Formula of Epsom salt is
(a) CaSO4 (b) Mg SO4 7H2O
(c) MgSO4 5H2O (d) MgSO4
6H2O
v
Which one of the following
Sulphate is not soluble in H2O
(a) Na2SO4 (b) K2SO4
(c) ZnSO4 (d)
BaSO4
v
Oxide of Alkali earth metals are
(a) Acidic (b)
Basic
(c)
neutral (d) Amphoteric
v
Which is used in breathing
equipments
(a) K2CO3 (b) KO2 (c)
Na2O (d) Na2O2
v
Which one of the following is
more soluble in H2O
(a)Be(OH)2 (b)
Mg (OH)2
(c)CaCO3 (d)
Ba(OH)2
v
Lime is used in manufacturing of
(a)Glass (b) Alcohol
(c) Cement (d)
Chalk pencil
v
Which element has good effect on
root system and stimulates the growth of root hair
(a) P (b)
Nitrogen
(c) Ca (d)
Sulpher
v
If plants have deficiency of
sulpher the colour of leaves became
(a) dark green (b)
green
(c)
yellow (d) pale green
B). Give Short Answer of the following
1. Why BeO shows
Amphoteric nature?
2. Why the aquous solution
of Na2CO3 is alkaline in nature
3. Why lime water turns
milky with CO2 but become clear with axces CO2
4. What is the role of
gypsum in Agriculture?
5. What is hard finish
plaster what is its function?
Q.No.2.
(a) Complete and balance the following
equations
(i) Li2O+CO2→ (ii)
Na+H2O → (iii) Mg3N2+H2O→ (iv) LiNO3→ (v)Mg(OH)2→
(b) Write the commercial preparation of
“Na” by Downs cell also write advantages of this process?
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