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To obtain pure carbon(ii)oxide from its mixture with carbon(iv)oxide, the mixture should be?
The most important element on the earth's crust is?
Aluminum hydroxide is used in the dyeing industry as a?
An electron can be added to a halogen atom to form a halide ion with?
When a solid substance disappears completely as a gas on heating, the substance is said to have undergone?
When cathode rays are deflected onto the electrode of an electrometer, the instrument becomes?
The general formula for the Alkanals is?
Proteins in acid solution undergo?
What mass of water is produced when 8.0g of hydrogen reacts with excess oxygen?
The chlorinated alkane often used industrially to remove grease is?
The substance often used for vulcanization of rubber is?
An organic compound that does not undergo a reaction with both hydrogen cyanide and hydroxylamine can be?
Which of the following types of bonding does not involve the formation of new substances?
What quantity of electricity will liberate 0.125 mole of oxygen molecules during the electrolysis of dilute sodium chloride solution?
A gaseous metallic chloride MCl consists of 20.22% of M by mass. The formula of the chloride is?
[ M = 27, Cl = 35.5]
32g of anhydrous copper(ii)tetraoxosulphate(vi) dissolved in 1dm\(^3\) of water generated 13.0kj of heat. The heat solution is?
Helium is used in observation of ballons because it is?
Deliquescent substances are also?
Chromatography is used to separate components of mixture which differ in their rates of ?
A few drop of conc HCL are added to about 10cm\(^3\) of a solution of PH 3.4. The PH of the resulting mixture is?