Question

pls answer these question ​

Answer 1

Answer:

densely forested foothills of himalayas are shiwaliks

Explanation:

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Answer 2

Answer:

1. The physical state of solution

A) is always liquid B) is solid

C) can be liquid, solid or gas D) is same as that of solute

2. When a saturated solution of sodium chloride is heated, it becomes

A) unsaturated B) supersaturated

C) remains saturated D) attains equilibrium

3. The solubility of a substance at a given temperature is amount of solute

A) present in 100 g of solution B) present in 1000 g of solution

C) present in 1 lit of solvent D) that can be dissolved in 100 g of solvent to get saturated

4. An ionic solid dissolves more in water if

A) Hlattice >> HHydration B) Hlattice + HHydration = 0

C) Hlattice + HHydration = 1 D) Hlattice << HHydration

5. The statement like dissolves like means that both solute and solvent should have

A) nearly same polarities B) nearly same molecular shapes

C) same molecular formulae D) same constituent elements

6. Among the following which is Solid Solution

A) Amalgam B) Brass

C) Naphthalene in Benzene D) None of these

7. Among the following which solubility remains same with increase in temperature

A) Ce2(SO4)3 B) NaCl C) NaNO3 D) KNO3

8. In a nearly saturated solution . The solubility increases with increase in temperature, then

H solution is

A) +ve B) –ve C) +ve (or) – ve D) 0

9. The energy that favours dissolution of solute in water is known as

A) Hydration energy B) lattice energy C) Ionization energy D) exothermic energy