Which one among the following equations is correctly balanced ?
NaOH + Al + H₂O → 2H₂ + NaAlO₂
2NaOH + 2Al + 2H₂O → 3H₂ + 2NaAlO₂
2NaOH + 2Al + 3H₂O → 4H₂ + 2NaAlO₂
2NaOH + 2Al + H₂O → H₂ + 2NaAlO₂
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
Miscellaneous · Easy
Which among the following events happened earliest ?
Miscellaneous · Easy
An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
Miscellaneous · Easy