Sodium hydrogen should be stored in properly closed containers because it?
Sodium hydrogen should be stored in properly closed containers because it? A. readily asborbs water vapour to air…
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To make coloured glasses, small quantities of oxides of metals which form coloured silicates are…
To make coloured glasses, small quantities of oxides of metals which form coloured silicates are often added to…
Coal fire should not be used in poorly ventilated rooms because ?
Coal fire should not be used in poorly ventilated rooms because ? A. of the accumulation of CO2…
The major component of the slag from the production of iron is?
The major component of the slag from the production of iron is? A. an alloy of calcium and…
A metallic oxide which reacts with both HCl and NaOH to give salt and water…
A metallic oxide which reacts with both HCl and NaOH to give salt and water only can be…
Which of the following metals will liberate hydrogen from steam or dilute acid?
Which of the following metals will liberate hydrogen from steam or dilute acid? A. Copper B. Iron C.…
Which of the following gases can be collected by the upward displacement of air?
Which of the following gases can be collected by the upward displacement of air? A. NO B. H…
Which of the following tests will completely identify anyone of surphur (VI) oxide, hydrogen, carbon…
Which of the following tests will completely identify anyone of surphur (VI) oxide, hydrogen, carbon (IV) oxide and…
In the Haber process for the manufacture of ammonia, the catalyst commonly used is finely…
In the Haber process for the manufacture of ammonia, the catalyst commonly used is finely divided ? A.…
Which of the following samples will react fastest with dilute trioxonitrate (V) acid?
Which of the following samples will react fastest with dilute trioxonitrate (V) acid? A. 5 g of lumps…