MCQs

Q401: Magnesium keep on burning in _____?

• A) N₂ as will as CO₂
• B) N₂
• C) CO₂

Q402: Metal belonging to the same group in the periodic table _____?

• A) Magnesium and Barium
• B) Magnesium and Na
• C) Magnesium and Copper

Q403: Point out the property which is not characteristic of alkali metal? Low electronegativity, Low melting point High ionization energy, Their ions are isoelectronic with noble gas

• A) Low electronegativity
• B) Low melting point
• C) High ionization energy

Q404: Which of the following statements is true? NaOH is named as caustic soda because it reacts with fats to form soap, Alkali metal hydroxides are stable to heat except KOH, CaOH is a stronger base than NaOH, When NaOH is made the gas released at the cathode is Cl2

• A) NaOH is named as caustic soda because it reacts with fats to form soap
• B) Alkali metal hydroxides are stable to heat except KOH
• C) CaOH is a stronger base than NaOH

Q405: Identity correct statement: Elemental Na is easily oxidizing, Element sodium can be prepared and isolated by electrolyzing an aqueous solution of NaCl, Element Na is strong oxidizing agent, Elemental Na is insoluble in NH3

• A) Elemental Na is easily oxidizing
• B) Element sodium can be prepared and isolated by electrolyzing an aqueous solution of NaCl
• C) Element Na is strong oxidizing agent

Q406: Element Na is strong oxidizing agent

• A) C6H6
• B) C2H4
• C) C8H8

Q407: The relative abundance of ion with a definite m/e value is measured by _____?

• A) The ion current in a mass spectrometer
• B) High pressure of vapours
• C) Quantity of fast moving electrons

Q408: Diameter of an atom is in the order of?

• A) 0.2m
• B) 0.2mm
• C) 0.2nm

Q409: A mixture of camphor and benzoic acid can be separated by _______?

• A) Chemical method
• B) Fractional crystallization
• C) Sublimation

Q410: Which of the following are the fundamental ways of transferring energy?

• A) Heat and work
• B) Pressure and work
• C) Volume and pressure