Chemical Engg MCQ Practice Test Series - Set 46 - ObjectiveBooks

Chemical Engg MCQ Practice Test Series - Set 46

Practice Test: Question Set - 46

1. LVDT used for displacement measurement is a/an __________ transducer.
    (A) Passive
    (B) Active
    (C) Capacitive
    (D) None of these

2. Which of the following is resistant to the action of both heat & chemicals?
    (A) Borosilicate glass
    (B) Silica glass
    (C) Soda lime glass
    (D) None of these

3. Cold chisel’s hammers are made of
    (A) High speed steel
    (B) High carbon steel
    (C) Forged steel
    (D) Mild steel

4. The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature.
    (A) Air
    (B) Water
    (C) Mercury
    (D) Alcohol

5. Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting)
    (A) V/A
    (B) V/A2
    (C) V2/A
    (D) V2/A2

6. __________ wire is never used for making the heating element.
    (A) Nichrome
    (B) Kanthal
    (C) Invar
    (D) None of these

7. Cassiterite is an ore of
    (A) Tin
    (B) Lead
    (C) Molybdenum
    (D) Chromium

8. The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : Cp of copper is 23 J K-1mole-1)
    (A) 2300 J
    (B) 4600 J
    (C) 230 J
    (D) 2.3 × 106 J

9. Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution
    (A) A1 is more alkaline than solution A2
    (B) A1 is highly acidic
    (C) A2 is very slightly acidic
    (D) Both (b) & (c)

10. The most suitable material for die casting is
    (A) Iron
    (B) Copper
    (C) Steel
    (D) Nickel

11. __________ is the most important element, which controls the physical properties of steel.
    (A) Manganese
    (B) Silicon
    (C) Carbon
    (D) Vanadium

12. In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be
    (A) ΔQ = 0, ΔS=0
    (B) ΔQ = 0, ΔS = +ve
    (C) ΔQ = 0, ΔS = -ve
    (D) ΔQ = +ve, ΔS= +ve

13. __________ is the hardest material out of the following.
    (A) Boron carbide
    (B) Tungsten carbide
    (C) Hardened steel
    (D) Silicon carbide

14. The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.
    (A) Casting
    (B) Pattern
    (C) Draft
    (D) Distortion

15. In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be
    (A) Higher, as it gives higher wavelength
    (B) Lower, as it gives higher wavelength
    (C) Higher, as it gives shorter wavelength
    (D) Lower, as it gives shorter wavelength

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