Oak tree can transpire as much as …… liters of water per day.
A) 700
B) 800
C) 900
D) 1000
1 Answers
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175 litres of a solution contains `88%` of acid and the rest water. How many liters of water must be added such that the resulting mixture contains `2
Correct Answer - 25 litres
2 Answers 1 views
Shiva can type `x` words per hour while Sreevias can type `y` words per hour. Shiva works for 5 hours per day and Sreenvias works for 7 hours per day.
Correct Answer - `5x + 7y ge 700`
2 Answers 1 views
Machine A can produce 6 items per hour and machine B can produce 11 items per hours. If machine A works for x hours and B works for y hours in a day a
Correct Answer - `6x + 11y le 200`
2 Answers 1 views
Pipe A in fill a tank in 15 horurs Pipe A and Pipe B together can fill it in 10 hours Pipe B can fill 8 liters per minute. Find the capicity of the ta
Correct Answer - 14400 litres
2 Answers 1 views
300 men can construct a200m long wall in 12 days working 8 hours a day. In how many days can 120 men construct 180 m long wall working 9 hours per day
\(\frac{M_1D_1H_1}{W_1}=\frac{M_2D_2H_2}{W_2}\) M1 = 300, D1 = 12, H1 = 8, W1 = 200 M2 = 120, D2 = ? H2 = 9, W2 = 180 \(\frac{300\times12\times8}{200}=\frac{120\times D\times7}{180}\) D = 24 days
2 Answers 1 views
Collect information about different chemical compounds as per their applications in day-to-day life.
No. Chemical compound Applications i. Vinegar(CH3COOH) Preservation of food, salad dressing, sauces, etc. ii. Magnesium hydroxide [Mg(OH)2] Common component of antacids (used to relieve heartburn, acid indigestion and stomach upset.) iii. Baking soda (NaHCO3) Cooking, antacid, toothpaste, etc. iv. Sodium benzoate (C6H5COONa) Used as food...
2 Answers 3 views
Clothes can dry faster on A) windy day B) rainy day C) sunny day D) drier
Correct option is C) sunny day
2 Answers 1 views
Holstein and Jersy give ……….. liters of milk per day.
Answer is (D) 25
2 Answers 1 views
If A pump can take 5 hrs to fill a 50 l of tank then how much time to take to fill a 75 liters of tank for the same pump?
Correct option is (D) \(7\,\frac{1}{2}\) hrs \(\because\) Time taken to fill a \(50\,l\) of tank = 5 hours \(\therefore\) Time taken to fill a \(75\,l\) of tank \(=\frac5{50}\times75\;hours\) \(=\frac{75}{10}\;hours\) = 7.5 hours = 7 hours + \(\frac12\) hours = \(7\frac12\) hours
2 Answers 1 views