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why current from lighting or power circuit shall not be used for firing shots in u/g coal mine?
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Answer / shivam dhiman
in case high amount of coal , it is not possible...but in small amount case it is possible......sparking due to current depend upon voltage...but on other side in petrol engine ,there is spark ignition by electric circuit....
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A family I know has several children. Each boy in this family has as many sisters as brothers but each girl has twice as many brothers as sisters. How many brothers and sisters are there?
In an exam, a girl scores 85% in one subject and 88 % in another subject. What percentage does she score in the third subject to get an average of 88% marks?
Girish invested a certain amount at the rate of 8% p.a. for 6 year to obtain an amount of Rs. 28046.How much amount did Girish obtain as simple interest?
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A man leaves office daily at 7:00 pm. A driver with car comes from his home to pick him from office and bring back home. One day he gets free at 5:30 and instead of waiting for driver he starts walking towards home.In the way he meets the car and return home on car. He reaches home 20 min earlier than usual.in how much time does the man reach home usually... ? GIVE THE STEPS PLZ...
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If A/B = 3/5,then 15A = ?
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