Q1. Dislocations are __________ defects.
(D) None of these
Q2. ‘Amortization’ in respect of financial obligation of a company means the
(A) Liquidation of financial obligations on instalment basis
(B) Commitment of financial obligation on priority
(C) Liquidation of all the obsolete equipments of the company
(D) Modernisation of the plant equipments
Q3. M10 index of coke indicates its
(A) Compressive strength
(C) Abrasion resistance
(D) Impact strength
Q4. The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the __________ of the slag.
Q5. Addition of __________ to steel does not impart hardness.
Q6. The same volume of all gases is representative of their
(A) Specific gravities
(C) Gas characteristic constants
(D) Molecular weights
Q7. Which of the following is an acidic constituent of B.F. slag?
Q8. For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by
(A) (ε1 + ε2)/ε1.ε2
(B) ε1.ε2/(ε1 + ε2 – ε1.ε2)
(D) ε1 + ε2
Q9. Larger length & diameter water pipes are made by
(A) Electrical resistance welding
(B) Die casting
(C) Semi-centrifugal casting
(D) Continuous casting
Q10. Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of