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. Circulation of liquid metal (i.e. molten sodium) in a liquid metal cooled nuclear reactor is done by a/an __________ pump.
(A) Electromagnetic
(B) Axial flow
(C) Diaphragm
(D) Reciprocating
Answer: Option A
02. Compression ratio of an I.C. engine is the ratio of the
(A) Clearance volume to the volume swept by piston per stroke
(B) Volume of air in cylinder before compression to that after compression
(C) Pressure after compression to that before compression
(D) None of these
Answer: Option B
03. When a copper ball is heated, the largest percentage increase will be in its
(A) Radius
(B) Area
(C) Mass
(D) Volume
Answer: Option D
04. Phosphorous is added to copper melt to
(A) Remove hydrogen
(B) Deoxidise the metal
(C) Improve fluidity
(D) Reduce shrinkage
Answer: Option A
05. Scaling occurs in boiler tubes due to the fact that, the solubility of Ca(OH)2 __________ with increasing temperature.
(A) Increases
(B) Decreases
(C) Shows inversion of solubility
(D) None of these
Answer: Option A
06. A metalloid possesses the characteristics of both the metals and non-metals. Which of the following is not a metalloid?
(A) Arsenic
(B) Antimony
(C) Lead
(D) None of these
Answer: Option C
07. For hardening high alloy steel, it is to be heated slowly and uniformly to avoid
(A) Local hardening
(B) Scale formation
(C) Segregation
(D) Warpage
Answer: Option D
08. Number of electrons in the outermost shell of a semi-conductor material is
(A) 2
(B) 4
(C) 6
(D) 8
Answer: Option D
09. Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refining of blister copper is resorted to, when
(A) Cheap electricity is available
(B) The precious metal content of copper is high
(C) There is a demand for ultrapure (99.99%) electrolytic copper
(D) All (a), (b) & (c)
Answer: Option D
10. Addition of __________ to steel cannot impart it high strength at elevated temperature.
(A) Nickel
(B) Magnesium
(C) Silicon
(D) Manganese
Answer: Option B
11. Which of the following is not an ore of aluminium?
(A) Troostite
(B) Kaolin
(C) Alunite
(D) Cryolite
Answer: Option A
12. Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs.
(A) Enthalpy
(B) Relative humidity
(C) Wet bulb temperature
(D) Dew point temperature
Answer: Option D
13. Which set of materials is used as a moderator in nuclear reactor?
(A) Zircaloy & beryllium
(B) Zircaloy & heavy water
(C) Zirconium & beryllium
(D) Heavy water & berkelium
Answer: Option D
14. Which of the following is inedible oil?
(A) Corn oil
(B) Tallow oil
(C) Olive oil
(D) Cotton seed oil
Answer: Option B
15. Role of a ‘collector’ in froth floatation is to
(A) Form a water repelling film on the mineral surface
(B) Create and stabilise the froth
(C) Act as a surface
(D) Collect the minerals according to their specific gravity
Answer: Option A
