Question

1. Molarity at 50°C of a solution will be less than that at 25°C. (True/False)
2. All lanthanoids and actinoids belong to...
....... block elements.
3. What is heavy water? Give its one use.
4. ................ is the only alkali metal to form nitride directly.
5. Draw the chain isomer of (CH3)2CH-COOH also write its IUPAC name.
6. Units of surface tension are (choose the correct option):
a) kg m-1 sec1 b ) kg sec-2 c) N m d) kg sec!
7. Why does the entropy of solid increases on melting?
8. Define inert pair effect.
9. Derive the relationship between Kp and Kc (2)
10. What do you mean by periodicity in properties?
11. The size of cation is always smaller than its parent atom. Why?
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Answer 1

Answer:

1. false.

2. f block.

6 (c)

Explanation:

1. because at higher temperature volume will be compressed and we know that molarity is inversely proportional to volume. less volume means more molarity.

so, molarity will be more at 50 degree celsius.

3. heavy water is the water which has dueterium combined with oxygen in it.