- River water
- Canal water
- Sea water
- Water in a lake
- Steel can be saved
- Accidents due to contraction in winter can be avoided
- Air gaps are necessary for bearing the weight of running train
- Accidents due to expansion in summer can be avoided
- Chemical Reaction
- Nuclear reaction
- Fission nuclear reaction
- Fusion nuclear reaction
- 13.82 billion years
- 4.53 billion years
- 4.6 billion years
- 4.53 billion years
- Dermatolog ist
- Orthopaedi st
- Dentist
- Nurologist
- It would be impossible to use a kerosene lamp
- The blotting paper would fail to function
- There would have been no plants on earth
- All of above
- The length of the day will increases
- The length of the day will decreases
- The length of the day will remain same
- None of these
- Increase over 10%
- Decrease by 10%
- Decrease by 0.5%
- Increase by 0.5%
- Annealing
- Quenching
- Tempering
- Nitriding
- Black Seafish
- Black Dragon fish
- Black Sea Horse
- Black Gillfish
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