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Daily Life Chemistry

Identify the type of reaction :- N₂(g) + 3H₂(g)→2NH₃(g)

a) Combination reaction
b) Displacement reaction
c) Decomposition reaction
d) Synthesis reaction

✔Answer

Correct Answer Is : Combination reaction

Solution Is :

Identify the type of reaction :- 2KNO₃ (s) → 2KNO₂(s) + O₂(g)

a) Decomposition reaction
b) Double displacement reaction
c) Acid-base reaction
d) Combination reaction

✔Answer

Correct Answer Is : Decomposition reaction

Solution Is :

Number of angular nodes for 4d orbital is

a) 4
b) 3
c) 2
d) 1

✔Answer

Correct Answer Is : 2

Solution Is :

Orbital angular momentum depends on

a) L
b) N and l
c) M and s
d) N and m

✔Answer

Correct Answer Is : L

Solution Is :

Calculate the energy of one mole of photons of radiation whose frequency is 5 * 10¹⁴HZ.

a) 209.1 KJ mol^-1
b) 199.51 KJ mol^-1
c) 600.176 KJ mol^-1
d) 270.1 KJ mol^-1

✔Answer

Correct Answer Is : 199.51 KJ mol^-1

Solution Is :

The frequency of the solid yellow line in the spectrum of sodium is 5.09 * 10¹⁴s^-1. Calculate the wavelength of this light in nanometres.

a) 431 nm
b) 589 nm
c) 714 nm
d) 375 nm

✔Answer

Correct Answer Is : 589 nm

Solution Is :

Name two most abundant non-metals in earth crust.

a) Oxygen, silicon
b) Dihydrogen , silicon
c) Aluminum , sodium
d) Titanium , oxygen

✔Answer

Correct Answer Is : Dihydrogen , silicon

Solution Is :

The general electronic configuration of noble gases.

a) Ns⁶ np⁶
b) Ds⁶ np⁶
c) Ns⁶ np⁶¹
d) Ns⁶ n⁶

✔Answer

Correct Answer Is : Ns⁶ np⁶

Solution Is :

The elements in which electrons are progressively filled in 4f-orbital are called

a) Halogens
b) Transition elements
c) Actinoids
d) Lanthanoids

✔Answer

Correct Answer Is : Lanthanoids

Solution Is :

Ionic radii vary in

a) Inverse proportion to the effective nuclear charge.
b) Inverse proportion to the square of effective nuclear charge.
c) proportion to the square screening effect.
d) Direct proportion to the square of `screening effect.

✔Answer

Correct Answer Is : Inverse proportion to the effective nuclear charge.

Solution Is :

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General Knowledge Practice Science & Technology Study Material

Daily Life Chemistry

Identify the type of reaction :- N2(g) + 3H2(g)→2NH3(g)

Correct Answer Is : Combination reaction

Solution Is :

Identify the type of reaction :- 2KNO3 (s) → 2KNO2(s) + O2(g)

Correct Answer Is : Decomposition reaction

Solution Is :

Number of angular nodes for 4d orbital is

Correct Answer Is : 2

Solution Is :

Orbital angular momentum depends on

Correct Answer Is : L

Solution Is :

Calculate the energy of one mole of photons of radiation whose frequency is 5 * 1014HZ.

Correct Answer Is : 199.51 KJ mol-1

Solution Is :

The frequency of the solid yellow line in the spectrum of sodium is 5.09 * 1014s-1. Calculate the wavelength of this light in nanometres.

Correct Answer Is : 589 nm

Solution Is :

Name two most abundant non-metals in earth crust.

Correct Answer Is : Dihydrogen , silicon

Solution Is :

The general electronic configuration of noble gases.

Correct Answer Is : Ns6 np6

Solution Is :

The elements in which electrons are progressively filled in 4f-orbital are called

Correct Answer Is : Lanthanoids

Solution Is :

Ionic radii vary in

Correct Answer Is : Inverse proportion to the effective nuclear charge.

Solution Is :

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Identify the type of reaction :- N₂(g) + 3H₂(g)→2NH₃(g)

Identify the type of reaction :- 2KNO₃ (s) → 2KNO₂(s) + O₂(g)

Calculate the energy of one mole of photons of radiation whose frequency is 5 * 10¹⁴HZ.

Correct Answer Is : 199.51 KJ mol^-1

The frequency of the solid yellow line in the spectrum of sodium is 5.09 * 10¹⁴s^-1. Calculate the wavelength of this light in nanometres.

Correct Answer Is : Ns⁶ np⁶