page 3 | Chemistry - DDCET MCQ - Electrical Engineering Objective

Q31. Water hardness is primarily caused by the presence of:

Iron and manganese

Calcium and magnesium ions

Water hardness is primarily caused by the presence of:

Lead and arsenic

Q32. The commercial name of polyacrylonitrile is ______________

Dacron

Orlon (acrilan)

PVC

Bakelite

Q33. What is the concentration of a solution expressed as molarity (M)?

The number of moles of solute per liter of solution

The number of grams of solute per liter of solution

The percentage of solute by mass in the solution

The ratio of the volume of solute to the volume of solution

Q34. Which compound will show tautomerism?

Acetaldehyde

Acetone

Ethanol

Methanol

Q35. Which of the following statements is not true about low density polythene?

Tough

Hard

Poor conductor of electricity

Highly branched structure

Q36. Which of the following polymers of glucose is stored by animals?

Cellulose

Amylose

Amylopectin

Glycogen

Q37. What type of bond is typically broken during ionization?

Covalent bond

Ionic bond

Metallic bond

Van der Waals bond

Q38. Which of the following is NOT a characteristic of electrolysis?

Non-spontaneous process.

Requires an external electrical source.

Oxidation occurs at the anode.

Reduction occurs at the anode

Q39. What is the difference between a saturated and an unsaturated solution?

A saturated solution is one that can hold no more solute at a given temperature, while an unsaturated solution can hold more solute.

A saturated solution is one that is clear, while an unsaturated solution is cloudy.

None of the above are true.

Q40. Which type of lubricant is most suitable for high-pressure applications?

Grease

Water-based lubricants

Mineral oil

Synthetic oil

MCQ

Chemistry (DDCET)