Question
The question consists of two statements numbered
“I and II” given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. In how many days, 10 men would complete a work? Statement I : 4 men and 6 women can complete same work in 20 days. Statement II : Number of days taken by 2 men to complete a work is same as number of days taken by 3 women for same work.Solution
From statement I: 4M + 6W = 20 --------(i) From Statement II: 2M = 3W--------(i) Combining statements, I and II, we will get the answer W = 2M/3 putting the value of W in equation i 4M + 6 × 2M/3 = 20 8M = 20 M = 20×8 10M = (20×8)÷ 10 = 16 days
Which of the following is an example of symbiosis?
What is the product of the reaction?
CH₃COOH + CH₃OH → (H⁺, heat)
In a nuclear reactor, one of the following is used as a fuel.
1 mole of carbon atoms = ______ g of carbon atoms
Two capacitors of capacitance 6 µF and 3 µF are connected in series across a battery of constant voltage.
The charges stored on the two capaci...
Group number and valency have no relation in
In Bohr’s model of the hydrogen atom, electrons in “stationary” orbits do not emit radiation continuously because:
The primary reason that smoking cigarettes is bad for our health is that cigarette smoke _______.
Chemical equation is balanced according to the law of
Consider the following statements regarding antibiotics
1. They are used to destroy disease-causing bacteria.
2. They can be applied to th...