Reaction of zinc with potassium hydroxide solution.

Blood in the pulmonary artery or pulmonary vein (Which one contains less oxyhaemoglobin?)

Give a reason: The Summer Monsoon winds blows over the Arabian Sea from the South-west

State one relevant reason: Graphite anode is preferred to platinum in the electrolysis of molten lead bromide.

The condition in which a pair of chromosomes carry similar alleles of a particular character.

Name the following: An offshore oil field in the Gulf of Cambay.

Match the items given in Column A with the most appropriate ones in Column B and rewrite the correct matching pairs.

Answer the following questions with reference to Norah Burke’s short story "The Blue Bead"

(i) Describe Sibia’s experience at the Bazaar. What were the things that filled her with wonder?

(ii) Who were the...

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

Write the equation for the reaction that occurs at the cathode during the extraction of aluminum by electrolysis.

Name the following elements:

1. An alkaline earth metal present in group 2 and period 3.
2. A trivalent metal used to make light tools.
3. A monovalent non-metal present in fluorspar.

He, Ar, Ne (Increasing order of the number of electron shells)

How is the Speaker of the Lok Sabha elected?

An alkali which completely dissociates into ions is ______. (ammonium hydroxide, calcium hydroxide, lithium hydroxide)

The wax-like layer on the epidermis of leaves which reduces transpiration.

Injury to medulla oblongata leads to death.

Give scientific reasons.