Related Questions

Which of the following oxides is not present in hematite iron ore?
A Titanium oxide
B Calcium oxide
C Cobalt oxide
D Manganese oxide
Which of the following is not an acidic refractory?
A Silica bricks
B Fireclay bricks
C Bauxite bricks
D Magnesia bricks
Which is not an acidic refractory?
A Silica
B Fireclay
C High alumina refractory
D Carbon black
Which one of the following oxides of Nitrogen is also known as Laughing Gas?
A NO2
B N2O5
C NO
D N2O
Which of the following is an adsorbant for removal of nitrogen oxides from gas/air?
A Active carbon
B Silica gel
C Bog iron (iron oxide)
D Pulverised limestone
Which one of the following oxides dissolves in water?
A CuO
B Al2O3
C Fe2O3
D Na2O
নিম্নলিখিত অক্সাইডগুলির মধ্যে কোনটি শক্তিশালী এসিড?(Which one of the following oxides is strong acid?)
A Na2O
B SO2
C SiO2
D Cl2O7
E Al2O3
Burning of coal produces oxides of sulphur and nitrogen which combined with water vapor leads to
A acid rain
B brackish water
C forest fire
D soil pollution
Often visible as smog , ozone is formed in the atmosphere form" hydrocarbons and nitrogen oxides , two major pollutants emitted by automobiles react with sunlight .
A ozone is formed in the atmosphere from
B ozone is formed in the atmosphere when
C ozone is formed in the atmosphere when
D ozone is formed in the atmosphere ,and when
Choose the correct option to replace the quotation part of each sentence. Often visible as smog, 'ozone is formed in the atmosphere from' hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight.
A ozone is formed in the atmosphere from
B ozone is formed in the atmosphere when
C ozone is formed in the atmosphere, and when
D ozone, formed in the atmosphere when

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