Forum

Mayank1444
@mayank1444
Noble Member
Joined: Oct 11, 2021
Last seen: Nov 14, 2021
Topics: 0 / Replies: 2157
Reply
Answer to: Polyethylene glycol method is used for

Correct answer: (3) gene transfer without a vector

4 years ago
Forum
Reply
4 years ago
Forum
Reply
Answer to: The domestic sewage in large cities

Correct answer: (4) is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs).

4 years ago
Forum
Reply
Answer to: During sewage treatment, biogases are produced which include

Correct answer: (3) methane, hydrogen sulphide, carbon dioxide

4 years ago
Forum
Reply
Forum
Reply
Forum
Reply
Answer to: A car is travelling along the road at 8 ms^-1. It accelerates at 1 ms^-2 for a distance of 18 m. How fast is it than travelling?

Initial velocity, u = 8 m/s Acceleration, a = 1 m/s2 Distance, s = 18 m Using relation, v2 = u2 + 2as v2 = (8)2 + 2 x 1 x 18 v2 = 64 + 36 =...

4 years ago
Forum
Reply
Answer to: What type of motion is represented by each one of the following graphs?

(i) Graph (a) represents uniform acceleration. (ii) Graph (b) represents constant speed. (iii) Graph (c) represents uniform retardation. (iv)...

4 years ago
Forum
Reply
Answer to: Study the speed-time graph of a car given alongside and answer the following questions: (i) What type of motion is represented by OA? (ii) What type of motion is represented by AB?

(i) OA represents uniform acceleration (ii) AB represents constant speed. (iii) BC represents uniform retardation. (iv) Acceleration of car from...

4 years ago
Forum
Reply
Answer to: Three speed-time graphs are given below: Which graph represents the case of: (i) a cricket ball is thrown vertically upwards and returning to the hands of the thrower?

(i) Graph (c): The speed of the ball goes on decreasing uniformly as it moves upward, reaches zero at the highest point, and then increases uniformly ...

4 years ago
Forum
Reply
Answer to: The graph given alongside shows how the speed of a car changes with time:

(i) Initial speed of the car =10km/h (ii) Maximum speed attained by the car = 35km/h (iii) BC represents zero acceleration. (iv) CD represents v...

4 years ago
Forum
Reply
Answer to: A car is moving on a straight road with uniform acceleration. The speed of the car varies with time as follows :

(i) Acceleration of the car = slope of line AB = = = 2m/s2 (ii) Distance travelled by the car in 10s = area of trapezium OABC = x (OA + BC)...

4 years ago
Forum
Page 52 / 108

How Can We Help?