Sunday Online Homework Quiz 16-01-2019

Under normal conditions using an ordinary cement, the period of removal of the form work, is :

• 7 days for beam soffits

• 14 days for bottom slabs of spans 4.6 m and more

• 21 days for bottom beams over 6 m spans

• All of these

M10 grade of concrete approximates

• 1 : 3 : 6 mix

• 1 : 1.5 : 3 mix

• 1 : 1 : 2 mix

• 1 : 2 : 4 mix

The risk of segregation is more for

• wetter mix

• larger proportion of maximum size aggregate

• coarser grading

• all the above.

A unit working purely on anaerobiosis is

• Septic Tank

• Activated Sludge Process

• Trickling Filter

• Contact Bed

In biological treatment there is formation of a biological film of:

• Algae

• Protozoa

• Aerobic bacteria

• Anaerobic bacteria

Dimensions of a rectangular settling tank are: length = 24 m, width = 6 m, depth =3 m. If 2 hour detention period for the tank is recommended, the rate of flow of sewage per hour is

• 432 m3

• 216 m3

• 108 m3

• 864 m3

Which of the following is not sewer appurtenance?

• Privy

• Traps

• Man hole

• Lamp hole

Winner of 2018 Odakkuzhal Award ?

• E V Ramakrishnan

• T D Ramakrishnan

• Subash Chandran

• K R Meera

Chirapunji of south India ?

• Mousiram

• Agumbe

• Lakkidi

• Sohra

The Kanchenjunga is located in which of the following state?

• Himachal Pradesh

• Jammu & Kashmir

• Uttar Pradesh

• Sikkim