Subject

Chemistry

Class

NEET Class 12

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

NEET Chemistry Solved Question Paper 2014

Multiple Choice Questions

20 mL of 0.5 N HCl and 35 mL of 0.1 N NaOH are mixed. The resulting solution will :

be neutral
be basic
turn phenolphthalein solution pink
turn methyl orange red

The cooling in refrigerator is due to :

the reaction of the refrigerator gas
the expansion of ice
the expansion of the gas in the refrigerator
the work of the compressor

In an exothermic equilibrium ,

A + 3B $⇌$ AB₃

all the reactants and products are in gaseous state. The formation of AB₃ is favoured at :

low temperature and low pressure
low temperature and high pressure
high temperature and high pressure
high temperature and low pressure

A bivalent metal has an equivalent mass of 32. The molecular mass of the metal nitrate is :

The line spectrum of He⁺ ion will resemble that of :

hydrogen atom
Li⁺ ion
helium atom
lithium atom

0.5 mole of each of H₂ , SO₂ and CH₄ are kept in a container. A hole was made in the container . After 3h , the order of partial pressures in the container will be :

pSO₂ > pH₂ > pCH₄
pSO₂ > PCH₄ > pH₂
pH₂ > pSO₂ > pCH₄
pH₂ > pCH₄ > pSO₂

7.
An evacuated glass vessel weighs 50 g when empty, 144.0 g when filled with a liquid of density 0.47 g mL^-¹and 50.5 g when filled with an ideal gas at 760 mm Hg and 300 K. The molar mass of the ideal gas is :
[R = 0.0821 L atm K^-1 mol^-1]

61.575

130.98

123.75

47.87

61.575

Weight of empty glass vessel = 50 g
Weight of glass vessel filled with liquid = 144.0 g

$∴$ Weight of liquid = 144- 50 = 94g
Density of liquid= 0.47 gmL^-1

$∴$ Volume of liquid = $\frac{94}{0.47}$ = 200mL = 0.2L

Mass of glass vessel filled with gas= 50.5 g

$∴$ Mass of gas (m) = 50.5- 50 = 0.5 g

By using ideal gas equation ,

pV = $\frac{m}{W}$ RT

where , p= 760 mm, Hg= 1atm ,
V = 0.2 L , T = 300K ,
and R = 0.0821 L atm K^-1 mol^-1

$∴$ Molar mass (M) = $\frac{mRT}{pV}$

= $\frac{0.5 \times 0.0821 \times 300}{1 \times 0.2}$

= 61.575g mol^-1

A body of mass x kg is moving with a velocity of 100 ms^-1. Its de-Broglie wavelength is 6.62 x 10^-35 m. Hence, x is :

[h = 6.62 x 10^-34Js]

0.1 Kg
0.25 Kg
0.15 Kg
0.2 Kg

A precipitate of AgCl is formed when equal volumes of the following are mixed :

[K_sp for AgCl = 10^-10]

10^-4 M AgNO₃ and 10^-7 M HCl
10^-5 M AgNO₃ and 10^-6 M HCl
10^-5 M AgNO₃ and 10^-4 M HCl
10^-6 M AgNO₃ and 10^-6 M HCl

10.

Pick out the incorrect statement from the following :

sp hybrid orbitals are equivalent and are at an angle of 180° with each other
sp² hybrid orbitals are equivalent and bond angle between any two of them is 120°
sp³d²hybrid orbitals are equivalent and are oriented towards corners of a regular octahedron
dsp² hybrid orbitals are equivalent with a bond angle of 90° between the two atoms