Name the substance which on treatment with chlorine yields bleaching powder
Plaster of paris should be stored in moisture proof containers. Explain why.
You are having five solutions A,B,C,D and E with pH values as follows:
The pH of a solution is 5.0. Its hydrogen ion concentration is decreased by 100 times, the solution will be:
Under what soil condition do you think a farmer would treat the soil of his fields with quicklime
What will happen if a solution of sodium hydrogen carbonate is heated?
Assertion : Phenolphthalalein gives pink colour in basic solution
Reason : Phenolphthalalein is a natural indicator
(i) Define a universal indicator
(ii) Solution A gives pink colour
(iii) Name one salt whose solution has pH
Why does an aqueous solution of an acid conduct electricity?
A Solution turns red litmus blue
Why does distilled water not conduct electricity
Equal lengths of magnesium ribbons are taken in test tubes A and B
If a few drops of a concerntrated acid accidentally spills over the hand of a student, what should be done?
A dry pellet of a common bases B when kept in open absorbs moisture and turns sticky.
Which one of the following types of medicines is
Write word equations and then balanced equations for
Why do not acids show acidic behaviour in the absence of water?
A milkman adds a very small amount of baking soda to fresh milk.
Assertion : While dissolving an acid or base in water
Reason : Dissolving an acid on a base in water
In one of the industrial processes used for manufacture of sodium hydroxide, a gas x is formed as by-product.
Why should curd and sour substances not be kept in brass and copper vessels?
Metal compound A reacts with dilute hydrochloric acid to produce effervescence
What is the common name of the compound CaOCL2?
Calcium phosphate is present in tooth enamel. Its nature is
A solution has pH of 7. Explain how would you
Why does dry HCL gas not change the colour of dry litmus paper?
While diluting an acid, why is it recommended that
What is tooth enamel chemically?
Tooth enamel is one of the hardest substances in our body.
Name the chemicals used in making fire extinguisher.
Answer the following:
(i) What happens when a concentrated solution
(ii) Why is the electrolysis of a concentrated solution
Which gas is usually liberated when an acid reacts with a metal?
How is the concentration of hydronium ions
A solution reacts with crushed egg-shells to give a
Five solutions A, B, C, D and E when tested with universal indicator
During the preparation of hydrogen chloride gas on a humid day, the gas is usually passed through the guard tube containing calciu..
Assertion : Sodium hydroxide reacts
Reason : Acids reacts with active metals
(i) Name one natural source of each of the following acids.
(ii) Which ion is commonly produced by all acids?
Equal volumes of hydrochloric acid and sodium hydroxide solution of some concentration are mixed and the pH of the resulting solut..
What is water of crystallisation? Write the common name and chemical formula of a commercially important compound which has ten w..
Connect With Answers
We are available 24x7 to answer.
TestprepKart [Answers] is a global answer platform for all students, teachers and contributors to help community grow and share knowledge. TestprepKart [Answers] is primarily focused on School Exam Preparation, Entrance Exam Preparation, UG Admissions Worldwide. Share your doubts and help others getting their answers is the spirit of TestprepKart [Answers].
our students rated us: 4.8 out of 5.0 by 1350+ valuable client