Which among the following elemtns are generally find in free state?
Heating mixture of Cu2O and Cu2S will give:
Which one of the following pairs of species have the same bond order?
Air contains maximum amount of :
Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is:
In the process of electroplating a utensil with zinc:
Amongst the following the most basic compound is:
The term PVC used in the plastic industry stands for:
What is the chemical name of table salt ?
“Atoms can neither be created nor destroyed.” This principle was given by ____________?
The gas used for artificial ripening of green fruit is:
Which among the following is the correct decreasing of bioelements in Human Body?
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The pyrimidine bases present in DNA are:
The gas used in the manufacture of vanaspati from vegetable oil is:
The hardest form of carbon is:
How many nearest neighbours are there for an atom in a hexagonal close-packed crystal structure?
Due to rusting the weight of iron:
Which among the following is popularly called Hypo?
The major constituent of air is:
The metal that is used as a catalyst in the hydrogenation of oils is:
The most abundant element in the earth's crust is ?
Sugars are converted in the liver into:
Consider the following statements:
If there were no phenomenon of capillarity
(1) It would be difficult to use a kerosene lamp.
(2) One would not be able to use a straw to consume a soft drink.
(3) The blotting paper would fail to function.
(4) The big trees that we see around would not have grown on the earth.
Which of the statements given above are correct?
What among following is used to produce artificial rain ?
The nucleus of an atom consists of:
Which one of the following pairs is not correctly matched?
The partial pressure of a component in a gas-phase reaction is 0.452 atm. What is the activity of the component?
Bleaching action of chlorine is by ?
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is:
Which is also called Stranger Gas ?