Burning of ammonia in air.

Conversion of ethanol to ethene by the action of concentrated sulphuric acid is an example of ____ . (dehydration / dehydrogenation / dehydrohalogenation)

(i) State the volume occupied by 40 gm of methane at STP, if its vapour density (V.D.) is 8.

(ii) Calculate the number of moles present in 160 gm of NaOH. [Atomic Mass: Na = 23, H = 1, O = 16]

Name the metal obtained from Bauxite. Give any one use of the metal mentioned by you.

__________ (AgCl / PbCl₂), a white precipitate is soluble in excess NH₄OH.

Read the extract given below and answer the questions that follow:

SHYLOCK: To bait fish withal. If it will feed nothing
else, it will feed my revenge. He hath disgraced
me and hindered me half a...

Match the atomic number 2, 4, 8, 15, and 19 with each of the following:

1. A solid non-metal belonging to the third period.
2. A metal of valency 1.
3. A gaseous element with valency 2.
4. An element belonging to
...

Give suitable biological reason: The birth rate in India is very high.

State two factors upon which the heat absorbed by a body depends.

If the straight lines 3𝑥 - 5𝑦 = 7 and 4𝑥 + 𝑎𝑦 + 9 = 0 are perpendicular to one another, find the value of a.

The diagram given below shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the questions:

1. Name the phenomenon that is depicted in the diagram. Define the
...

Write the IUPAC names of each of the following:

Conversion of ethene to ethane is an example of __________ (hydration / hydrogenation).

State one relevant observation: Sulphide ore is added to a tank containing oil and water, and then stirred or agitated with air.

State any two causes for the Non-Cooperation Movement

Name a substance whose resistance decreases with the increase in temperature.