A salt prepared by displacement reaction is _____. (ferric chloride, ferrous chloride, silver chloride)

The compound formed when haemoglobin combines with carbon dioxide in blood.

What must be added to the polynomial 2𝑥³ - 3𝑥² - 8𝑥, so that it leaves a remainder 10 when divided by 2x + 1?

List any four writs that the High Court can issue for the enforcement of Fundamental Rights.

The diagram below shows a light source P embedded in a rectangular glass block ABCD of critical angle 42°. Complete the path of the ray PQ till it emerges out of the block. [Write necessary angles.]

Name the gas evolved in each of the following cases:

1. Alumina undergoes electrolytic reduction.
2. Ethene undergoes hydrogenation reaction.
3. Ammonia reacts with heated copper oxide.

"The modern means of irrigation are gaining popularity." Give two reasons to justify this statement.

The type of waste generated in hospitals and pathological laboratories.

Give appropriate biological / technical term.

Using ruler and compass only, construct a ∆ABC such that BC = 5 cm and AB = 6.5 cm and ∠ABC = 120°

i. Construct a circum-circle of ∆ABC
ii. Construct a cyclic quadrilateral ABCD, such that D is...

An electrolyte which completely dissociates into ions is:

A. Alcohol

B. Carbonic acid

C. Sucrose

D. Sodium hydroxide

Give a reason: Chemical fertilizers must be replaced by organic manure

Action of dilute Hydrochloric acid on iron (II) sulphide.

Give a reason: Thar is a desert

(i) Define Calorimetry. (ii) Name the material used for making a Calorimeter. (iii) Why is a Calorimeter made up of thin sheets of the above material answered in (ii)?

(i) Define heat capacity of a substance.

(ii) Write the SI unit of heat capacity.

(iii) What is the relationship between heat capacity and specific heat capacity of a substance?

Give one word or a phrase: The tendency of an atom to attract electrons to itself when combined in a compound.