The daily expenditure of 100 families are given below. Calculate f1 and f2 if the mean daily expenditure is Rs.188.
Expenditure in Rs. 140-160 160-180 180-200 200-220 220-240 No. of families 5 25 f1 f2 5 Solution: Expenditure in Rs.... View Article
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Look at this series: 80, 10, 70, 15, 60, . . . What number should come next?
Solution: This is an alternating addition and subtraction series. Observe the first pattern. 80, 70, 60. 10 is subtracted from... View Article
Fill in the blanks. The matter is made up of tiny particles called
Solution: The matter is made up of tiny particles called atoms.
50 circular plates each of diameter 14 cm and thickness 0.5 cm are placed one above the other to form a right circular cylinder. Find its total surface area.
Given, 50 circular plates each with diameter 14 cm Radius of circular plates = 7 cm Thickness of plates =... View Article
Twenty four is divided into two parts such that 7 times the first part added to 5 times the second part makes 146. Find each part
Let us assume the first part as x and second part be (24 – x) Now, as per the given... View Article
What is the next number in the series 2, 12, 36, 80, 150, ? (A) 263 (B) 251 (C) 284 (D) 252
Given series is 2, 12, 36, 80, 150 Step 1: Difference between the first and second term in the series... View Article
Looking at a portrait of a man, Harsh said, “His mother is the wife of my father’s son. Brothers and sisters I have none’. At whose portrait was Harsh looking? (A) His son (B) His cousin (C) His uncle (D) His nephew (E) None of these
His son Since Harsh has no brother or sister. Hence, he is only his father’s son. Now, wife of my... View Article
The Indian Partnership Act came into force on __________ (A) 1933 (B) 1932 (C) 1956 (D) 1934
1932 Most of the businesses in India adopt a partnership business, so to monitor and govern such partnership The Indian... View Article
To the captain of a ship A, which is travelling with velocity vA = (3i + 4j)km/hr, a second ship B appears to have a velocity of (5i + 12j) km/hr. What is the true velocity of the ship B?
Given The true velocity of a ship A is \(\begin{array}{l}\vec{v_{A}}=(3\hat{i}-4\hat{j})\frac{km}{h}\end{array} \) And ship B appears to have a velocity of... View Article
Optimum speed for turning on a banked road is (A) √(Rgtanθ) (B) √(Rgcotθ) (C) √(Rgsinθ) (D) √(Rgsecθ)
Optimum speed is the speed with which one can take turns on banked roads without wear and tear. The proper... View Article
Ventilators are provided at the top of room (A) To bring oxygen for breathing (B) So that sunlight may enter the room (C) To maintain convectional currents to keep the air fresh in the room (D) To provide an outlet for carbon dioxide
To maintain convectional currents to keep the air fresh in the room In a room containing a mixture of hot... View Article
Monocotyledonous seeds possess a single cotyledon which is represented by (A) Tegman (B) Endosperm (C) Scutellum (D) Aleurone
Scutellum A monocotyledonous seed has embryos that possess only one large cotyledon called scutellum. Generally, the scutellum is shaped like... View Article
In glycolysis, glucose molecule is converted into which substance? (A) Lactic acid (B) Ethanol (C) Pyruvate (D) Amino acid
Pyruvate Glycolysis is the process in which glucose is broken down to produce energy. It produces two molecules of pyruvate,... View Article
What will Rs 500 amounts to in 10 years after its deposit in a bank which pays annual interest rate of 10% compounded annually?
Given, The amount deposited in the bank is Rs 500. At the end of first year, amount = Rs 500(1... View Article
What is serum?
The serum is the liquid or undiluted part of the blood, which lacks clotting factors. Hence, it is formed after... View Article
15 pastries and 12 biscuit packets have been donated for a school fete. These are to be packed in several smaller identical boxes with the same number of pastries and biscuit packets in each. How many biscuit packets and how many pastries will each box contain?
Given that, Number of pastries = 15 Number of biscuit packets = 12 So, the required number of boxes which... View Article
Contamination of water with sewage is indicated by cysts of (A) Escherichia (B) Entamoeba (C) Pseudomonas (D) Leishmania
Entamoeba Contamination of water with sewage is indicated by cysts of Entamoeba histolytica. E. histolytica causes infection by ingestion of... View Article
Fill in the blank with a suitable adverb: She often comes _________ for the lectures. (A) Lately (B) Late (C) Lateness (D) Lateful
Late It is an adverb that denotes the way she comes and the time when she arrives for the lecture.... View Article
Which of the following is not a true statement about the entropy of a system? (A) Entropy is a measure of the randomness in a system (B) The entropy of an amorphous solid is greater than that of a crystalline solid (C) The entropy of a spontaneous reaction cannot decrease (D) The entropy of an isolated system will spontaneously increase or remain constant
The entropy of a spontaneous reaction cannot decrease Entropy is a measure of randomness in a system. Hence, entropy of... View Article
At 80 degree C the vapour pressure of pure liquid A is 520 mm of Hg and that of pure liquid B is 1000 mm Hg. If a mixture solution of A and B boils at 80 degree and 1 atm pressure, the amount of A (mole percent) in the mixture is (1 atm = 760 mm Hg) (A) 50% (B) 54% (C) 32% (D) 44%
Given \(\begin{array}{l}P_{A}^{0} = 520 mm Hg\\ P_{B}^{0}= 1000 mm Hg\end{array} \) Let mole fraction of A in solution be xA... View Article
