Questions

Which of the statement(s) about the reaction given below is/are INCORRECT?

2PbO (s) + C (s) ⟶ 2Pb (s) + CO2 (g)

I. Lead is getting reduced.

II. Carbon is getting reduced.

III. Lead oxide is getting reduced.

Read each sentence to find out whether there is any error in any part

He was courted arrest(a) in order to protest against(b) corruption among the government servants(c). No error.(d)

Which of the following is used in pencils?

Duncan passage is situated between

Which kind of power accounts for the largest share of power generation in India

Rearrange the parts of the sentence in correct order

Truth was

P-­to lead to a breach of peace as a false one
Q­-no defence since
R­-a true defamatory statement was as likely

Choose the word which is nearly opposite in meaning to the given word:-

Sceptic

Read the passage carefully and choose the best answer to each question out of the four alternatives.

Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author Yoshan Moodley, Professor at the Department of Zoology, University of Venda in South Africa.

Two centuries ago, the black rhinoceros – which roamed much of sub Saharan Africa – had 64 different genetic lineages; but today only 20 of these lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the 'genetic erosion' coincided with colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.

Sub Sharan Africa has lost how many black rhino genetic lineages in 200 years?