#### 11th Standard Chemistry English Medium Free Online Test Creative 1 Mark Questions - Part Five

11th Standard

Reg.No. :
•
•
•
•
•
•

Chemistry

Time : 00:10:00 Hrs
Total Marks : 10

10 x 1 = 10
1. The change in the oxidation number of S in H2S and SO2,in the following industrial reaction:
2H2S(g) + SO2(g) $\longrightarrow$ 3S(s) + H2O(g)

(a)

-2 to 0, +4 to 0

(b)

-2 to 0, +4 to -1

(c)

-2 to -1, +4 to 0

(d)

-2 to -1, +4 to -2

2. Assertion: Equal volumes of all the gases do not contain equal number of atoms
Reason: Atom is the smallest particle which takes part in chemical reactions.

(a)

Both assertion and reason are correct and reason is the correct explantion for assertion

(b)

Both assertion and reason are correct but reason  is not the correct explantion for assertion

(c)

Assertion is true but reason are false

(d)

Both assertion and reason are false

3. Excluding hydrogen and helium, the smallest element in the periodic table is _____

(a)

Lithium

(b)

Oxygen

(c)

Fluorine

(d)

Chlorine

4. The products formed during the cracking long chain hydrocarbon C6H12 are-----------

(a)

CO2 + H2O

(b)

CO + H2

(c)

C6H10 + H2

(d)

C6H6 + 3H2

5. The main pigment in plants is chlorophyll which contains ________

(a)

iron

(b)

calcium

(c)

barium

(d)

magnesium

6. For one mole of a gas, the ideal gas equation is _____________.

(a)

$PV=\frac{1}{2}RT$

(b)

PV = RT

(c)

$PV=\frac{3}{2}RT$

(d)

$PV=\frac{5}{2}RT$

7. The enthalpies of all elements in their standard states are ____

(a)

1

(b)

0

(c)

<0

(d)

different for each elements

8. ${ C }_{ \left( s \right) }+{ H }_{ 2 }O_{ \left( g \right) }+{ H }_{ 2\left( g \right) }:\Delta H<O$ The above equilibrium will proceed in forward direction when

(a)

It is subjected to high pressure

(b)

It is subjected to high temperature

(c)

Insert gas (argon) is added at constant pressure

(d)

9. Statement I: The dissolution of ammonium nitrate increases steeply with increase III temperature.
Statement II: The dissolution process of ammonium nitrate is endothermic in nature.

(a)

Statement I and II are correct and statement II is the correct explanation of statement I.

(b)

Statement I and II are correct but II is not the correct explanation of I.

(c)

Statement I is correct but II is wrong

(d)

Statement I is wrong but II is correct. .

10. Statement I: A solution of potassium chloride in water deviates from ideal behavior.
Statement II : The solute dissociates to give K+ and Cl- ion which form strong ion dipole interaction with water molecules

(a)

Statement I& II are correct and II is the correct explanation of I

(b)

Statement! & IIare correct but II is not correct explanation of I

(c)

Statement I is correct but statement II is wrong.

(d)

Statement I is wrong but statement II is correct