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31.
How many electrons does a hydrogen molecule have in its K shell?
32.
Who wrote the patriotic song ‘Sare Jahan Se Achha Hindustan Hamara’ that was published in the weekly journal Ittehad on 16 August 1904?
33.
What is pro-vitamin A or the anti-cancer compound present in carrots called?
34.
Which of the following figures represents Mendeléev's Periodic Table that was published in a German journal in 1872?
35.
Which protein is found in grains?
36.
Which of the following figures accurately depicts the inter-conversion of the three states of matter?
37.
Select the name of the hydrocarbon with a structural formula CH3 – CH2 – CH2 – CH2– CH2– CH3.
38.
What are the thin filamentous extensions that the motile bacterial cells have from their cell wall called?
39.
Who was the first person to conduct a systematic study of chromosomes during division and called this process mitosis?
40.
Every year in the month of February, this camel festival is organised by Rajasthan Tourism Development Corporation in
__________.
