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Which of the following is a chemical change?
1 Magnetization of iron
2 Melting of ice
3 Burning of sulphur
4 Melting of wax
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A substance which changes readily into vapor without heating is called 1 Efflorescent 2 Synthetic 3 Volatile 4 Effervescent
who is the first president of india ?
2 Answers State Bank Of India SBI,
What is the capacity of arihant’s atomic reactor?
Which is the largest refractor telescope?
Heavy water is 1 Sea water (H2O+Salt) 2 D2O 3 H2O2 4 None of these
In which year the solar observatory in kodikanal founded?
Catalytic properties of a substance may be best defined as a phenomenon of 1 Absorption 2 Chemisorption 3 Adsorption 4 None of these
When and where was the first experimental atomic explosion took place?
Why Colours is Important in Our Daily Life???
Which of the following reactions is used for increasing the number of carbon atoms in a chain? 1 Substitution reaction 2 Wurtz reaction 3 Friedel – Crafts reaction 4 Cannizzaro’s reaction
Which of the following is used as a lubricant? 1 Graphite 2 Silica 3 Diamond 4 Iron oxide
what are disadvantages of interrupt and exception?
Biological Sciences 
