Chemistry Mcqs

The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be________________?

• (A)  1
• (B)  3
• (C)  5
• (D)  7

Answer

Submitted By :Ali Uppal

Rutherford bombarded _________________ particles in discovery of nucleus?

• (A)  Gamma-rays
• (B)  Alpha-rays
• (C)  Beta-rays
• (D)  X-rays

Answer

Submitted By :Ali Uppal

Charge of electron was measured by__________________?

• (A)  J.J Thomson
• (B)  Millikan
• (C)  Rutherford
• (D)  Perrin

Answer

Submitted By :Ali Uppal

Free neutron changes into proton with the emission of__________________?

• (A)  Neutrino
• (B)  Electron
• (C)  Both A & B
• (D)  Meson

Answer

Submitted By :Ali Uppal

Increase in atomic number is observed during_________________?

• (A)  Alpha emission
• (B)  Beta emission
• (C)  Both A & B
• (D)  Radioactivity

Answer

Submitted By :Ali Uppal

The number of fundamental particles in an atom of the lightest isotope carbon are_______________?

• (A)  6
• (B)  12
• (C)  18
• (D)  20

Answer

Submitted By :Ali Uppal

Atom cannot be divided into simple unitstheorized by________________?

• (A)  Rutherford
• (B)  Dalton
• (C)  Bohr
• (D)  Schrodinger

Answer

Submitted By :Ali Uppal

A technique of partition chromatography in which the solvent is in a pool at the bottom of container_______________?

• (A)  Adsorption chromatography
• (B)  Ascending chromatography
• (C)  Radial chromatography
• (D)  Descending chromatography

Answer

Submitted By :Ali Uppal

A substance having very high vapour pressure at its melting point on heating will show_______________?

• (A)  Melting
• (B)  Sublimation
• (C)  Decomposition
• (D)  Condensation

Answer

Submitted By :Ali Uppal

Fluted filter paper is used to__________________?

• (A)  Filter hot solution
• (B)  Avoid premature crystallization
• (C)  Increase the rate of filtration
• (D)  Decrease the area

Answer

Submitted By :Ali Uppal