Today, all competitive exams are Multiple Choice Questions(MCQ) based examination system and the main factor is to answer each question in a prescribed time. So, practice as much as possible before the original test you are going to face.
Total number of Multiple Choice Question (MCQ) is 15 and time allotted for each question is 30 seconds. After the allotted time, the question will be marked as un-attempt.
QUIZ
Test Conducted by: ObjectiveBooks.com
Next Mock Tests:
01. Coating of zinc over steel is known as
(A) Cladding
(B) Galvanising
(C) Anodising
(D) Passivation
Answer: Option B
02. In cold working of metal as compared to its hot working
(A) Cracks and blow holes are eliminated
(B) Ductility and impact strength improves
(C) Appreciable strain hardening is produced
(D) Yield stress, hardness and fatigue strength is not at all affected
Answer: Option D
03. Preheating prior to welding is done for the purpose of
(A) Decreasing cooling rate
(B) Facilitating fusion of high melting metals
(C) Preventing hot cracking
(D) Ensuring full penetration
Answer: Option A
04. In the floatation process, pine oil is used as the
(A) Collector
(B) Activator
(C) Frother
(D) Depressant
Answer: Option C
05. Absorptivity of a grey body varies with the
(A) Wavelength of the incident ray
(B) Temperature
(C) Both 'a' & 'b'
(D) Neither 'a' nor 'b'
Answer: Option D
06. Flywheel is provided in a machine to
(A) Provide structural strength to the shaft
(B) Smoothen the power impulses
(C) Help in quick starting of the machine
(D) None of these
Answer: Option B
07. Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding
(A) Glycerol
(B) Nitro cellulose
(C) Camphor
(D) None of these
Answer: Option D
08. The weight of a body at the centre of the earth is
(A) Infinite
(B) Zero
(C) Same as on the surface of the earth
(D) None of these
Answer: Option B
09. Out of the following, the most ductile material is
(A) Mild steel
(B) Copper
(C) Nickel
(D) Aluminium
Answer: Option A
10. Which of the following is not an ore of aluminium?
(A) Troostite
(B) Kaolin
(C) Alunite
(D) Cryolite
Answer: Option A
11. Nitrogen is not an essential component of
(A) Protein
(B) Urea
(C) Oils and fats
(D) Any of these
Answer: Option C
12. Overheating of satellites during re-entry to earth is controlled by
(A) Thick insulation
(B) Ceramic lining
(C) Cooling by flow of air over the surface
(D) None of these
Answer: Option C
13. The hardness of the lathe bed material is measured by the
(A) Shore scleroscope
(B) Brinell hardness tester
(C) Vickers hardness tester
(D) Rockwell hardness tester
Answer: Option A
14. Safety matches is produced using
(A) Red phosphorus
(B) Yellow phosphorus
(C) Black phosphorus
(D) Elemental sulphur
Answer: Option A
15. The stress at which a metal fails by fatigue lies
(A) Near the fracture point of the stress-strain curve
(B) In the plastic range
(C) In the elastic range
(D) None of these
Answer: Option C
