Home
Class 12
BIOLOGY
Composited manure is formed from (a) Rot...

Composited manure is formed from
(a) Rotted vegetable and animal refuse
(b) Farmyard manure and green manure
(c) Farm refuse and household refuse
(d) Organic wastes from which biogas has been extracted

A

Rotted vegetable and animal refuse

B

Farmyard manure and green manure

C

Farm refuse and household refuse

D

Organic wastes from which biogas has been extracted

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

A metal 'X' on treatment with NaOH forms a white precipitate (A) which is soluble in excess of NaOH to yield complex (B). (A) is soluble in HCI to produce (C). On strong heating (A) gives (D) from which the metal is extracted. Identity X, A, B, C, D and write the equation involved.

Which of the following is correct: (a) Cells of all living organisms have a nucleus. (b) Both animal and plant cells have a well defined cell wall. (c) In prokaryotes, there are no membrane bound organelles. (d) Cells are formed de novo from abiotic materials.

The number of ways of choosing a committee of two women and three men from five women and six men, if Mr. A refuses to serve on the committee if Mr. B is a member and Mr. B can only serve if Miss C is the member of the committee is a. 60 b. 84 c. 124 d. none of these

A committee of 6 is chosen from 10 men and 7 women so as to contain at least 3 men and 2 women. In how many ways can this be done if two particular women refuse to serve on the same committee? a. 850 b. 8700 c. 7800 d. none of these

A team of four students is to be selected from a total of 12 students. The total number of ways in which the team can be selected such that two particular students refuse to be together and other two particular students wish to be together only is equal to a. 220 b. 182 c. 226 d. none of these

Which of the following is not correct? (a) Robert Brown discovered the cell. (b) Schleiden and Schwann formulated the cell theory. (c) Virchow explained that cells are formed from pre-existing cells. (d) A unicellular organism carries out its life activities within a single cell.

An organic compound [A] C_(8)H_(6) on reacting with dilute sulphuric acid containing mercuric sulphate gives a compound [B] which can also be obtained from a reaction of bezene with acid chloride in the presence of anhydrous AlCl_(3) . The compound [B] when treated with iodine and aqueous NaOH yields [C] and a yellow compound [D]. Identify [A],[B],[C] and [D] with justification. Show how [B] is formed from [A].

An organic compound [A], whose molecular formula is C_(3)H_(6)O , gives iodoform reaction and forms compound [B]. Compound [B], when heated with silver powder, converts into compound [C}. Compound [C] reacts with dil. Sulphuric acid and mercuric sulphate to obtain compound [D], which gives Aldol condensation reaction. Write down the names of all compounds from [A] to [D] and also write the chemical equations for each step.