Question
Which of the following dyes is used for colouring Paper
and typewriters?Solution
Triphenyl Dyes contains the paraquinoid moiety as a chromophore and -OH, -NHâ‚‚ as auxochrome. these dyes are not fast to light and washing and hence used for colouring Papers or typewriters.
The area of a square is 900 cm2 which is 120 cm2 less than that of a rectangle. Find the perimeter of the rectangle if the length ...
The 5th and 8th term of an arithmetic progression are 13 and -5 respectively. What is the 15th term?
[16 × 15 + 224 × 5] ÷ 5 = ? × 4
Find the third proportion of 16 and 24.
The 5th term of an AP is 23 and the 12th term is 51. Find the 20th term.
Find the sum of geometric progression, 40, 20, 10, 5, …..
If p = q + 2, where q is the product of six consecutive positive integers, then which of the following is/are true? Â
a. p is a perfect cube
If p:q = 5:7 and p + q = 408, then find the value of (q - p).
The average weight of 16 people in a group is 75 kg. If the heaviest person who weighs 95 kg is replaced by a new person, and the average weight of the ...
24, 29, 62, ?, 758, 3791
...
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