It is rich in methanogens. - Vidyadip

MCQ

It is rich in methanogens.

A
Primary sludge
B
Activated sludge
✓
Excreta of cattle
D
Flocs

✓

Answer

Correct option: C.

Excreta of cattle

c

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Match the following parts of a nephron with their function

$(a)$ Descending limb of Henle's loop	$(i)$ Reabsorption of salts only
$(b)$ Proximal Convoluted tubule	$(ii)$ Reabsorption of water only
$(c)$ Ascending limb of Henle's loop	$(iii)$ Conditional reabsorption of sodium ion and water
$(d)$ Distal convoluted tubule	$(iv)$ Reabsorption of ion, water and organic nutrients

Select the correct option from the following

Cell aggregate body plan is found in the

$T$-cells are lymphocytes which produce the cellular immunity. These are developed from

Mark the given statements True (T) or False (F) :
(i) The secretions of endocrine glands are called hormones.
(ii) Hormones are non-nutrient chemicals which act as intracellular messengers and are produced in trace amount.
(iii) The hypothalamic hormones are called gonadotrophin releasing hormone (GnRH) which stimulates the pituitary to synthesis and release gonadotrophins.
(iv) Somatostatin hormone from the hyphothalamus stimulates the release of growth hormone from pituitary.
(v) The pituitary gland is located in a bony cavity called Sella tursica and is attached to hypothalamus by a stalk.
(vi) Neurohyphosis part of pituitary consists of two portion, pars distalis and pars intermedia.
(vii) Pars intermedia, portion of pituitary secretes only one hormone called melanocyte stimulating hormone.
(viii) The posterior part of pituitary gland is pars nervosa, which is also called neurohypophysis.
(ix) Neurohypophysis of pituitary synthesise and releases two hormones oxytocin and vasopressin.
(x) Low-secretion of GH by pituitary leads to gigantism and over-secretion to pituitary dwarfism.
Choose the correct option given below :-

Number of chromosomes in Down's syndrome are

Choose the correct statement.

For brain cells the ammonia is very toxic because

An autoimmune disease is

Hormone produced against allergic reaction is

‘Malaria' a common disease world wide is caused by a