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Question : Directions: Which of the following letter clusters will replace the question mark (?) in the given series? DH, EJ, FL, GN, ?
Option 1: PH
Option 2: HN
Option 3: GM
Option 4: HP
Correct Answer: HP
Solution : Given: DH, EJ, FL, GN, ?
In the above-given series, add 1 and 2 to the place values of the first and second letters of the letter clusters. DH→D + 1 = E; H + 2 = J EJ→E + 1 = F; J +
Question : How many positive factors of 40 are there?
Option 1: 3
Option 2: 12
Option 3: 6
Option 4: 8
Correct Answer: 8
Solution : 40 = 23 × 5 If N = am × bn, where a and b are prime numbers, the number of positive factors of N = (m+1) × (n+1) The number of positive factors of 40 = (3+1) × (1+1) =
Question : Direction: In the following question, two statements are given followed by four conclusions I, II, III, and IV. You have to consider the two statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements.
Statements
Some cars are buses.
All cars are caves.
Conclusions
I. Some caves are not buses.
II. Some caves are buses.
III. No cave is a bus.
IV. Some caves are cars.
Option 1: Only conclusion I follows
Option 2: Only conclusion II follows
Option 3: Only conclusion II and IV follow
Option 4: Only conclusion IV follows
Correct Answer: Only conclusion II and IV follow
Solution : Let's evaluate the conclusions based on the given statements:
Venn diagram
Now, let's consider each conclusion:
Question : Directions: Select the option related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number. 7 : 125 :: 8 : 216 :: 9 : ?
Option 1: 755
Option 2: 824
Option 3: 343
Option 4: 729
Correct Answer: 343
Solution : Given: 7 : 125 :: 8 : 216 :: 9 : ?
Subtract 2 from the first number, and then find the cube of the resultant, to get the second number – Like, 7 : 125→7 – 2 = 5; (5)3 = 125 And,
Question : The ratio of P, Q, and R is 2 : 5 : 7 respectively. If their sum is 840, then what is the difference between P and R?
Option 1: 300
Option 2: 380
Option 3: 200
Option 4: 260
Correct Answer: 300
Solution : Given: The ratio of P, Q, and R is 2 : 5 : 7 respectively. Their sum is 840. Let the required number be $2x$, $5x$ and $7x$ respectively. According to the question, ⇒ $2x+5x+7x=840$ ⇒ $14x=840$ ⇒ $x=60$ The difference between P and R
Question : What is formed when carbon dioxide is passed through lime water?
Option 1: Copper sulphate
Option 2: Calcium carbonate
Option 3: Magnesium oxide
Option 4: Baking soda
Correct Answer: Calcium carbonate
Solution : The correct option is Calcium carbonate.
The interaction between carbon dioxide and calcium hydroxide produces a white precipitate, calcium carbonate (CaCO3) when carbon dioxide is passed through lime water. This is used to detect the presence of carbon dioxide. The chemical
Question : Sultan of Johor Cup is a tournament of which sport?
Option 1: Football
Option 2: Cricket
Option 3: Hockey
Option 4: Badminton
Correct Answer: Hockey
Solution : The correct answer is Hockey.
The Sultan of Johar Cup is an annual, international under-21 men's hockey tournament. This tournament is held in Malaysia annually. The first edition of this tournament was held in 2011. India and Great Britain are the most successful teams,
Question : Directions: Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All pens are plates. All plates are trays. Some trays are boxes. Conclusions: I. Some boxes are plates. II. Some trays are pens. III. Some boxes are pens. IV. No tray is a plate.
Option 1: Only conclusion II follows
Option 2: Only conclusion I follows
Option 3: Only conclusion III follows
Correct Answer: Only conclusion II follows
Solution : The possible Venn diagram, according to the given statements is as follows –
Let's analyse the conclusions – Conclusion (I): Some boxes are plates – From the Venn diagram, it is evident that there is no direct relation between boxes and plates.
Question : Directions: Study the following bar diagram carefully and answer the questions. The bar graph given below shows the foreign exchange reserves of a country (in millions US $) from 1991-1992 to 1998-1999.
The ratio of the number of years, in which the foreign exchange reserves are above the average reserves, to those in which the reserves are below the average reserves is:
Option 1: 2 : 6
Option 2: 3 : 4
Option 3: 3 : 5
Option 4: 4 : 4
Correct Answer: 3 : 5
Solution : Average of the foreign exchange reserves of a country (in millions USD) from 1991-1992 to 1998-1999 is: $=\frac{2640+3720+2520+3360+3120+4320+5040+3120}{8}$ = 3480 The number of years in which the reserves are above the average reserves = 3 The number of years in which the reserves
Question : Which of the following can degrade detritus into simpler inorganic substances?
Option 1: Algae
Option 2: Phytoplankton
Option 3: Fungal enzymes
Option 4: Lichens
Correct Answer: Fungal enzymes
Solution : The correct answer is Fungal enzymes.
Fungal enzymes decompose detritus (dead organic matter) into simpler inorganic substances. Fungi are decomposers in ecosystems, and their enzymes help break down complex organic compounds in detritus into smaller molecules like simple sugars and other organic and
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