Ajay Tutorials

1. Suppose three meetings of a group of professors were arranged in Mumbai, Delhi and Chennai. Each professor of the group attended exactly two meetings. 21 professors attended Mumbai meeting, 27 attended Delhi meeting and 30 attended Chennai meeting. How many of them attended both the Chennai and Delhi meetings? a) 18 b) 24 c) 26 d) Cannot be found from the above information Answer option a) 2. A vendor sells articles having a cost price of Rs.100 each. He sells these articles at a premium price during first eight months, and at a sale price, which is half of the premium price, during next four months. He makes a net profit of 20% at the end of the year. Assuming that equal numbers of articles are sold each month, what is the premium price of the article? a) 122 b) 144 c) 150 d) 160 Answer option b) 3. The statement: “The father of my son is the only child of your parents” a) can never be true b) is true in only one type of relation c) can be true for ...

1. In each of the following groups of words is a hidden number, based on which you should arrange them in ascending order. Pick the right answer:  A. Tinsel event  B. Man in England  C. Good height  D. Last encounter a) A,B,C,D b) C,B,D,A c) A,C,D,B c) C,D,B,A Answer   option b) 2. Let m and n be two positive integers such, that m + n + mn = 118 . Then the value of m + n is not uniquely determined 18 20 22 Answer  option d) 3. AB is the diameter of a circle. The chord CD is perpendicular to AB intersecting it at P. If CP = 2 and PB = 1, the radius of the circle is a) 1 b) 2.5 c) 2 d) 5 Answer  option b) 4. Jar W contains 40 white marbles and jar B contains 40 black marbles. Ten black marbles from B are transferred to W and mixed thoroughly. Now, ten randomly selected marbles from W are put back in Jar B to make 40 marbles in each jar. The number of black marbles in W a) ...

CLASS 10TH CHEMISTRY - ACIDS, BASES AND SALTS CHAPTER 1 MCQ 1) Which of the following types of medicine is used for treating indigestion caused by over-eating? a) antibiotic b) analgesic c) antacid d) antiseptic Ans.  c) antacid 2) A solution reacts with marble chips to produce a gas which turns lime water milky. The solution contains: a) Na2SO4 b) CaSO4 c) H2SO4 d) K2SO4 Ans  c) H2SO4 3) The most commonly used indicator in laboratory is (a) Methyl Orange (b) Litmus  (c) Phenolphtalein (d) Universal Indicator Ans  d) Universal Indicator 4) one of the following is not an organic acid. That is a) ethoanoic acid b) formic acid c) citric acid d) carbonic acid Ans (d) carbonic acid 5) Olfactory indicators are a) Clove b) Turmeric c) Soap d) Rose Petals Ans a) Clove 6) on dissolving in a water acid produce a) hydrogen ions b) hydroxide ions c) sodium ions d) chloride ions Ans a) hydrogen ions {H+(aq) ions} 7) most of aci...