Chemistry Mcqs

In crystallization if the solvent is inflammable then direct heating is________________?

• (A)  needed
• (B)  avoided
• (C)  depends on temperature
• (D)  crystallization does not involve heating

Answer

Submitted By :Ali Uppal

In solvent extraction ether is used to separate products of organic synthesis from________________?

• (A)  water
• (B)  iodine
• (C)  hydrochloric acid
• (D)  gases

Answer

Submitted By :Ali Uppal

The use of CaCl2 and PCl5 in the process of crystallization is as a____________________?

• (A)  oxidizing agent
• (B)  reducing agent
• (C)  drying agent
• (D)  colouring agent

Answer

Submitted By :Ali Uppal

Without suction pump filtration is __________________?

• (A)  Fast process
• (B)  Slow process
• (C)  Rapid process
• (D)  All are possible

Answer

Submitted By :Ali Uppal

Direct conversion of solids into vapours is called ___________________?

• (A)  Solvent extraction
• (B)  sublimation
• (C)  crystallization
• (D)  vaporization

Answer

Submitted By :Ali Uppal

In CCI4 I2 shows________________?

• (A)  Red colour
• (B)  Purple colour
• (C)  Blue colour
• (D)  Yellow colour

Answer

Submitted By :Ali Uppal

Crystallization does not involve_______________?

• (A)  heating
• (B)  sublimation
• (C)  cooling
• (D)  vaporization

Answer

Submitted By :Ali Uppal

The major steps involved in complete quantitative analysis are _________________?

• (A)  2
• (B)  3
• (C)  4
• (D)  5

Answer

Submitted By :Ali Uppal

Which is not related pair of term used in analytical techniques________________?

• (A)  Filtrate residue
• (B)  Sublimate sublimation
• (C)  Drying desiccator
• (D)  Separating funnel mother liquor

Answer

Submitted By :Ali Uppal

Sintered glass is a porous material used for ___________________?

• (A)  absorption
• (B)  adsorption
• (C)  filtration
• (D)  sublimation

Answer

Submitted By :Ali Uppal