Question

(i) Winter crops are known as rabi crops
(ii) Yeast is a fungus.

(iii) Cotton is cellulose .
(iv) Sodium is less reactive than iron.
(v) Petroleum is an exhaustible natural​

Answer 1

Explanation:

1. Rabi crops, which are also known as winter crops, are the crops that are grown in the winter season (October or November). ... These crops are not affected by the rainfall. Major Kharif crops are rice, maize, cotton, jowar, bajra etc. Major Rabi crops are wheat, gram, peas, barley etc.
2. Yeast are single-celled microorganisms that are classified, along with molds and mushrooms, as members of the Kingdom Fungi. Yeasts are evolutionarily diverse and are therefore classified into two separate phyla, Ascomycota or sac fungi and Basidiomycota or higher fungi, that together form the subkingdom Dikarya.
3. After scouring and bleaching, cotton is 99% cellulose. Cellulose is a macromolecule –– a polymer made up of a long chain of glucose molecules linked by C-1 to C-4 oxygen bridges with elimination of water (glycoside bonds).
4. A metal in the activity series can displace any metal below it in the series from its compound. The elements potassium, sodium, lithium and calcium are very reactive and they react with cold water to produce hydroxides and hydrogen gas. So zinc is more reactive than iron and copper.
5. Exhaustible natural resources like coal, petroleum and natural gas were formed from the dead remains of living organism (fossils). So, these are called fossil fuels. Coal and petroleum are very important natural resources and play a vital role in modem society. They are found in the earth's crust.

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Answer 2

Answer:If this is true and false then :

Explanation:

1st and 2nd are true