onelinerinfo@gmail.com
Home | About Us | Contact Us
onelinerinfo@gmail.comHome | About Us | Contact Us
|
Q 1.
Name the reaction when one product gets oxidized and other gets reduced during reaction is called?
Ans.
Redox reaction.
|
|
Q 2.
Name the reaction in which two or more substance combine to form a new single substance?
Ans.
Combination reaction.
|
|
Q 3.
When two different groups or atoms are exchanged is called?
Ans.
Double displacement reaction.
|
|
Q 4.
Name the product formed when barium chloride reacts with aluminum sulphate?
Ans.
Aluminium chloride and barium sulphate.
|
|
Q 5.
Name the product formed when hydrogen sulphide burns in air?
Ans.
Water and Sulphur dioxide.
|
|
Q 6.
Which flames gives when magnesium ribbon burns in air?
Ans.
Dazzling white flame.
|
|
Q 7.
What do you mean by Oxidation?
Ans.
Gain of oxygen and loss of hydrogen.
|
|
Q 8.
Name that reaction when heat is absorbed?
Ans.
Endothermic reaction.
|
|
Q 9.
Name that reaction when heat is given out with the products is called?
Ans.
Exothermic reaction.
|
|
Q 10.
Formula of Quick lime?
Ans.
Cao.
|
|
Q 11.
Name the reaction takes place when iron reacts with copper sulphate, iron sulphate?
Ans.
Displacement reaction.
|
|
Q 12.
Methods to avoid corrosion in iron articles?
Ans.
1.Galvanization
2.Apply oil or grease 3.Apply paint. |
|
Q 13.
Name the reaction occurs when an element displaces another element from its compound?
Ans.
Displacement reaction.
|
|
Q 14.
Formula of ammonia?
Ans.
NH3.
|
|
Q 15.
When zinc granules are added in dilute sulphuric acid and hydrochloric acid. Name the gas released?
Ans.
Hydrogen.
|
|
Q 16.
When Potassium metal react with water it gives?
Ans.
Potassium hydroxide and hydrogen.
|
|
Q 17.
What do you mean by reduction?
Ans.
Loss of oxygen or gain of hydrogen.
|
|
Q 18.
Name the salts that are produced by precipitation reaction?
Ans.
Insoluble salts.
|
|
Q 19.
Chemical formula of Sulphuric acid?
Ans.
HNO3.
|
|
Q 20.
The green coating on copper and black coating on silver is the example of?
Ans.
Corrosion.
|