Question
A chemist has 40 litres of a 25% acid solution. How many
litres of a 60% acid solution must be added so that the resulting mixture has 40% acid?Solution
Let x litres of 60% solution be added. Pure acid initially = 25% of 40 = 10 litres Pure acid added = 60% of x = 0.6x litres Total acid = 10 + 0.6x Total volume = 40 + x Required concentration = 40%: (10 + 0.6x) / (40 + x) = 0.4 10 + 0.6x = 0.4(40 + x) 10 + 0.6x = 16 + 0.4x 0.6x − 0.4x = 16 − 10 0.2x = 6 ⇒ x = 30 litres.
What best defines "valuable security" under Section 2(31)?
Chapter VII of The Indian Evidence Act, 1872 deals with________.
Nothing is an offence which is done by a child under ……. Of age
Who establishes the Data Protection Board of India?
What is the limitation period for filing a suit for a breach of contract under the Limitation Act?
Order XIX of the Code of Civil Procedure, 1908 related to __________.
Under the Trade Union Act, 1926, Section 24 requires what is the minimum number of persons required to apply for registration of a trade union?
Under the proviso to Section 8B(1), the Commission may extend the six-month investigation period by:
What is e-commerce?
Who can try offences under the Trade Union Act 1926?
