- (A) Exists in three allotropic forms
- (B) Cannot be welded
- (C) Is used in oceanographic and space exploration applications
- (D) None of these
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- (A) Sulphuric acid (10%)
- (B) Sea water
- (C) Hydrochloric acid
- (D) None of these
- (A) Rubber
- (B) Acrylics
- (C) Lead
- (D) Plastics
- (A) Manganese
- (B) Carbon
- (C) Phosphorous
- (D) Silicon
- (A) Mainly tin (85%) and lead
- (B) Saw dust and iron dust mixture
- (C) Zinc and aluminium
- (D) Copper and aluminium
- (A) Has very low strength
- (B) Cannot be heated
- (C) Is broken by small temperature changes
- (D) All
- (A) Aluminium
- (B) High silicon (14%) iron
- (C) Duralumin
- (D) Phosphor bronze
- (A) Chromium and molybdenum
- (B) Nickel and chromium
- (C) Molybdenum and nickel
- (D) Chromium and aluminium
- (A) High co-efficient of friction between journal and bearing
- (B) Ability to retain lubricant on its surface
- (C) Low co-efficient of friction between journal and bearing
- (D) Both
- (A) Do not increase in plasticity with rise in temperature
- (B) Allow slip to occur between molecules
- (C) Do not take on a permanent set
- (D) None of these
