Sirhind Canal Takes From _______River. (A) Okhla. (B) Gomati. (C) The Sutlej. (D) Fire Lake Of Khadakwasla.
The correct answer is (C) The Sutlej. Sirhind canal takes water from the Sutlej River at Rupar, in Punjab state.... View Article
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A Raft Of Wood (Density 600 G/M3) Of Mass 120 Kg Floats In Water. How Much Weight Can Be Put On The Raft To Make It Just Sink?
Given: Density = \(\begin{array}{l} 600 g/m^{3} \end{array} \) Mass of a raft of wood = 120 kg The mass of... View Article
Assume That A Neutron Breaks Into A Proton And An Electron. What Will Be The Energy Released During This Process?
As given : Neutron \(\begin{array}{l} \rightarrow \end{array} \)Proton + Electron A we know: Mass of neutron,\(\begin{array}{l} m_{n} = 1.6725 *... View Article
Let f be a continuous and differentiable function such that f (x) and f ′ (x) have opposite signs everywhere. Then
Given, f (x) be a continuous and differentiable function. \(\begin{array}{l}f(x) \& f^{\prime}(x) \text { have opposite signs.} \\ \text {Consider... View Article
Two circular cylinders of equal volume have their heights in the ratio 1 : 2 The ratio of their radii is
Let the height be h and 2h and radii are r and R.\(\begin{array}{l}\therefore \pi \mathrm{r}^{2} \mathrm{~h}=\pi \mathrm{R}^{2} 2 \mathrm{~h} \\... View Article
If 30% of 140 = x% of 840, then the value of x is
30% of 140 = x% of 840(30 / 100) * 140 = (x / 100) * 84042 = 8.4xx =... View Article
A tap can fill a tank of 500 litres in 3 hours 30 minutes. In how much time will it fill one-fifth of the tank?
One-fifth of 500 litres of tank = (1 / 5) * 500 = 100 litresTime taken to fill 500 liters... View Article
Choose the appropriate number for fourth place: 13 : 91 : : 131 : ?
13 * 7 = 91131 * 7 = 917The number in the fourth place is 917.
An angle that is equal to 360 is called:
An angle of measure 360 is known as a complete angle.
If cosec6 θ – cot6 θ = a cot4 θ + b cot2 θ + c, then a + b + c =
The given expression is cosec6 θ – cot6 θ = a cot4 θ + b cot2 θ + c.\(\begin{array}{l}a^{3}-b^{3}=(a-b)\left(a^{2}+a b+b^{2}\right)\\... View Article
A square board has an area of 121 sq cm. What is its perimeter?
A square board has an area of 121 sq cm.The side of the square board = √121= 11 cmThe perimeter... View Article
When I triple a certain number and add 2, I get the same answer as I do when I subtract the number from 50. Find the number.
Let the number be x.According to the question, 3x + 2 = 50 – x3x + x = 50 –... View Article
Solve sec2 45 + cot2 135.
The given expression is sec2 45 + cot2 135.\(\begin{array}{l}=\sec ^{2} 45^{\circ}+\cot ^{2}\left(180-45^{\circ}\right) \\ =\sec ^{2} 45+\left(-\cot \left(45^{\circ}\right)\right)^{2} \\ =\sec ^{2}... View Article
Find the single discount which is equivalent to two successive discounts of 20% and 5%.
Assume the marked price to be Rs 100.After a discount of 20%, the price = 100 – 20% of 100... View Article
The value of sin-1 [cos (53π / 5)] is
The given expression is sin-1 [cos (53π / 5)].\(\begin{array}{l}=\sin ^{-1}\left(\cos \frac{50 \pi+3 \pi}{5}\right) \\ =\sin ^{-1}\left(\cos \left(\frac{50 \pi}{5}+\frac{3 \pi}{5}\right)\right) \\... View Article
Represent the number 19 as the difference between the cubes of natural numbers.
19 = 27 – 8 = 33 – 23
Give one example to the following statement: A whole number that is not a natural number.
The set of natural numbers start from 1.The set of whole numbers start from 0. The number which is a... View Article
The cost of 32 tables is Rs 23520. Find the number of such tables that can be purchased for Rs 51450.
The number of tables bought for Rs. 23520 = 32 The number of tables bought for Rs. 1 = 32... View Article
At a certain time in a deer park, the number of heads and number of legs of deer and human visitors was counted and it was found that there were 39 heads and 132 legs. find the number of deers and human visitors in the park.
Let x be the total number of legs of deer and y be the total number of legs of human... View Article
Change the following improper fractions to mixed fractions: (i) 100 / 17 (ii) 81 / 11 (iii) – 209 / 7 (iv) – 113 / 15
(i) 100 / 17 = 5 (15 / 17)(ii) 81 / 11 = 7 (4 / 11)(iii) – 209 /... View Article
