Q. In appreciation of the social improvements completed in a town, a wealthy philanthropist decided to gift Rs 750 to each male senior citizen in the town and Rs 1000 to each female senior citizen. Altogether, there were 300 senior citizens eligible for this gift. However, only 8/9th of the eligible men and 2/3rd of […]
Q. What is the missing number in the following sequence? 2, 12, 60, 240, 720, 1440,________,0 (A) 2880 (B) 1440 (C) 720 (D) 0 Ans: 1440
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Q. What would be the smallest natural number which when divided either by 20 or by 42 or by 76 leaves a remainder of 7 in each case? (A) 3047 (B) 6047 (C) 7987 (D) 63847 Ans: 7987 Sol: Number is divided either by 20 or by 42 or by 76 = K × LCM
Q. The area of a square is 𝑑. What is the area of the circle which has the diagonal of the square as its diameter? Ans: Option D
Q. “A___________investigation can sometimes yield new facts, but typically organized ones are more successful.” The word that best fills the blank in the above sentence is (A) meandering (B) timely (C) consistent (D) systematic Ans: Meandering
Q. “From where are they bringing their books?_______bringing_________books from_____.” The words that best fill the blanks in the above sentence are (A) Their, they’re, there (B) They’re, their, there (C) There, their, they’re (D) They’re, there, there Ans: They’re, their, there
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Q. A hot liquid is to be cooled in a 1-1 shell and tube heat exchanger from 80 oC to 50 oC. Cooling water enters the tube side at 30 oC, and exits at 45 oC. The properties of the liquids are constant. Also, the overall heat transfer coefficient is same for counter-current and co-
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Q. In a roll crusher, rolls of diameter 1 m each are set in such a manner that minimum clearance between the crushing surfaces is 15 mm. If the angle of nip is 31o, the maximum diameter of the particle (in mm) which can be crushed is Ans: 52 to 54
Q. The humidity of air at a dry-bulb temperature of 65 oC is 0.025 kg water/kg dry air. The latent heat of vaporization of water at 0 oC is 2500 kJ/kg. The psychrometric ratio of air is 0.95 kJ (kg dry air)-1 K-1. Considering 0 oC as reference temperature, the enthalpy of air (in kJ/kg)
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Q. Hydrogenation of benzene is to be carried out using Ni (density = 8910 kg/m3) as catalyst, cast in the form of non-porous hollow cylinders, as shown below. The reaction occurs on all the surfaces of the hollow cylinder. During an experiment, one such cylinder is suspended in the reactant stream. If the observed rate
