What is the mass of precipitate formed when 50 ml of 8.5 % solution of AgNO₃ is mixed with 100 ml of 1.865 % potassium chloride solution ?

(a)

3.59 g

(b)

7g

(c)

14 g

(d)

28 g

Which of the following electronic configuration represent the element in ground state?

(a)

1s²2s¹2p¹

(b)

1s²2s²2p¹

(c)

1s²2s¹2p_x¹2p_y¹2p_z¹

(d)

1s²2s²2p⁶3s²3p_x¹3p_y¹3p_z¹3d¹

Electron density in the yz plane of 3d_xy orbital is ___________

(a)

zero

(b)

 0.50

(c)

0.75

(d)

 0.90

J. J. Thomson's cathode ray experiment revealed that atoms consist of _____________

(a)

electrons

(b)

protons

(c)

neutrons

(d)

photons

Consider the following statements
1. \(\lambda\) = h / mv is valid only when the particle travels at speed much less than the speed of light.
2. Einstein's mass-energy relationship is E = mc²
3. The angular momentum (mvr) ofthe electron must be equal to an integral multiple of h/4\(\pi\) . Which of the following statements) given above is/ are correct?

(a)

1&3 

(b)

Only 1

(c)

1 & 2

(d)

1, 2 & 3

Which is the lightest among the following?

(a)

An atom of hydrogen

(b)

An electron

(c)

 A neutron

(d)

 A proton

The radius of nucleus is approximately ________ times smaller than the radius of atom.

(a)

1,00,000

(b)

 5,000

(c)

10,000

(d)

200

Which of the following conclusions could not be derived from Rutherford's \(\alpha\)-particle scattering experiment? 

(a)

Most of the space in the atom is empty.

(b)

The radius of the atom is about 10^-10 m while that of the nucleus is 10^-15 m

(c)

 Electrons move in a circular path of fixed energy called orbits.

(d)

Nucleus and the electrons are held together by electrostatic force of attraction

The value of Bohr radius for hydrogen atom is ___________

(a)

0.529 \(\times\) 10^-8 cm

(b)

0.529 \(\times\) 10^-10 cm

(c)

0.529 \(\times\) 10^-12 cm

(d)

0.529 \(\times\) 10^-12 cm

According to Bohr's theory angular momentum of an electron in 6^th orbit is _____________

(a)

\(2.5\frac { h }{ \pi } \)

(b)

\(6\frac { h }{ \pi } \)

(c)

\(3\frac { h }{ \pi } \)

(d)

\(\frac { 2.5h }{ 2\pi } \)

What will be the wavelength of a ball of mass 0.1 kg moving with a velocity of 10ms^-1?

(a)

6.62 \(\times\) 10^-34m

(b)

6.626 \(\times\) 10³⁴m

(c)

6.626 \(\times\) 10^-34m

(d)

6.626 \(\times\) 10³⁴m

Assertion (A): Bohr's orbits are also called stationary states.
Reason (R): Electrons are stationary is an orbit.
Codes:
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true but R is false
(d) Both A and R are false

(a)

Both A and R are true and R is the correct explanation ofA

(b)

Both A and R are true but Ris not the correct explanation of A

(c)

A is true but R is false

(d)

Both A and R are false

Given that the energy of the first Bohr about is -1312 kJ mol^-1, the ionisation energy of hydrogen atom is ___________

(a)

-1312 kJ

(b)

1312 kJ

(c)

21.8 x 10^-20 J

(d)

2.18 x 10^-19 J

Which of the following expressions represents the electron probability function?

(a)

\(4\pi r dr{ \Psi }^{ 2 }\)

(b)

\(4\pi r^2 dr{ \Psi }\)

(c)

\(4\pi r^2 dr{ \Psi }^{ 2 }\)

(d)

\(4\pi r dr{ \Psi }\)

Maximum deviations from ideal gas is expected from ___________

(a)

H₂(g)

(b)

N₂(g)

(c)

CH₄(g)

(d)

NH₃(g)

C(diamond) ) ⟶ C(graphite), ΔH = -ve, this indicates that ___________

(a)

graphite is more stable than diamond

(b)

graphite has more energy than diamond

(c)

both are equally stable

(d)

stability cannot be predicted

Shape of ClF₃ is _____________

(a)

Planar triangular

(b)

Pyramidal

(c)

'T' Shaped

(d)

none of these

The IUPAC name of the compound  is ____________

(a)

3 – Ethyl -2– hexene

(b)

3 – Propyl -3– hexene

(c)

4 – Ethyl – 4 – hexene

(d)

3 – Propyl -2-hexene

A sample of 0.5g of an organic compound was treated according to Kjeldahl’s method. The ammonia evolved was absorbed in 50mL of 0.5M H₂SO₄. The remaining acid after neutralisation by ammonia consumed 80mL of 0.5 MNaOH, The percentage of nitrogen in the organic compound is __________

(a)

14%

(b)

28%

(c)

42%

(d)

56%

Hyper Conjugation is also known as ___________.

(a)

no bond resonance

(b)

Baker - nathan effect

(c)

both (a)and (b)

(d)

none of these

An alkyl bromide (A) reacts with sodium in ether to form 4, 5– diethyloctane, the compound (A) is _________

(a)

CH₃ (CH₂)₃ Br

(b)

CH₃(CH₂)₅ Br

(c)

CH₃(CH₂)₃ CH(Br)CH₃

(d)

\({ CH }_{ 3 }-{ \left( { CH }_{ 2 } \right) }_{ 2 }-CH\left( Br \right) -\underset { \overset { { | } }{ { CH }_{ 3 } } }{ { CH }_{ 2 } } \)

In which of the following molecules, all atoms are co-planar ___________

(a)

(b)

(c)

(d)

both (a) and (b)

In the reaction  X is ________.

(a)

(b)

(c)

(d)

Consider the reaction,
CH₃CH₂CH₂Br + NaCN → CH₃CH₂CH₂CN + NaBr
This reaction will be the fastest in __________

(a)

ethanol

(b)

methanol

(c)

DMF (N, N' – dimethyl formanide)

(d)

water