CHEMICAL ENGINEERING
Q The progressive warming up of the earth’s surface is mainly due to the___________________?
  • A A. Automobile exhaust
  • B B. Blanketing effect of co2 in the atmosphere
  • C C. De-forestation
  • D D. Thickening of ozone layer
Previous Hydrogen ion concentration in distilled water is_______…
Next TLV of NO2 & NO exposure for the human being is 5 & 25 …
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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