Related Questions

Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.
Reason R: The sand used in slow sand filters is finer than that in rapid sand filters
Select your answer based on the coding system given below:
Cleaning is done by
(i) Scraping and removal in filters slow sand
(ii) Back washing in slow sand filters
(iii) Scraping and removal in filters rapid sand
(iv) Back washing in rapid sand filters
The correct answer is
Assertion (A) Cooking foods by moist heat methods like boiling increases the glycemic effect of foods.
Reason (R) Moist heat reduces the particle size of the food.
The velocity of sound in moist air is more than in dry air because the moist air has
A cylinderical container of 32 cm height and 18 cm radius is filled with sand. Now all this sand is used to form a conical heap of sand. If the height of theconical heap is 24 cm, what is the radius of its base?
The molding sand in moist state is named as __________
Natural Sand is mixed with bentonite gets its properties improved and is called Synthetic Sand.
Statement: When a beetle moves along the sand within a few tens of centimetres of a sand scorpion, the scorpion immediately turns towards the beetle and dashes towards it. Reason: When a beetle disturbs the sand, it sends pulses is longitudinal, while the other set in transverse.
Consider the following statement regarding the depth of sand of the rapid gravity filter? i. It should be checked against breakage of floc ii. The sand depth should lie between 100-200cm iii. The floc should be attached through the sand bed Which of the above statement is/are correct?
Consider the following statement. i. The penetration of suspended matter is deep in the slow sand filter ii. The penetration of suspended matter is superficial in the rapid sand filter iii. Coagulation is not required in the slow sand filter Which of the above statement is/are correct?