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Question : Points 'A' and 'B' are 70 km apart on a highway. A car starts from 'A' and another from 'B' at the same time. If they travel in the same direction, they meet in 7 hours, but if they travel towards each other, they meet in one hour. Find the speed of the two cars (in km/hr).
Option 1: 20, 30
Option 2: 40, 30
Option 3: 30, 50
Option 4: 20, 40
Correct Answer: 40, 30
Solution : Let the speed of the car starting from A be $x$ km/hr and that from B be $y$ km/hr. ($x>y$) In opposite direction, relative speed = $(x+y)$ km/hr In same direction, relative speed = $(x-y)$ km/hr Distance = 70 km ⇒ $\frac{70}{x-y}$ = 7
Question : Select the most appropriate option to substitute the underlined segment in the given sentence. If no substitution is required, select 'No substitution'.
Online crimes are on the increase, so everyone needing to be careful and alert.
Option 1: need to be careful
Option 2: need to have careful
Option 3: needs to be careful
Option 4: No substitution
Correct Answer: needs to be careful
Solution : The third option is the correct choice.
Question : The population of the city was 12,50,000 in the year 2010. It increased at the rate of 2% per annum during the years 2011 and 2012. In the year 2013, it decreased by 1%. Find the population of the city at the end of 2013.
Option 1: 1,28,54,952
Option 2: 13,50,000
Option 3: 13,87,495
Option 4: 12,87,495
Correct Answer: 12,87,495
Solution : The population of the city in 2010 is 1250000. Then, Population, $P$ = 1250000 Rate of increment, $R$ = 2% We have to find the population at the end of the year 2012, i.e. time, $n$ = 2 years Population after 2 years is given
Question : Select the INCORRECTLY spelt word.
Option 1: Felicilate
Option 2: Coterminous
Option 3: Ambient
Option 4: Announce
Correct Answer: Felicilate
Solution : The first option is the incorrectly spelled word.
The correct spelling is felicitate which means to congratulate or express happiness for someone's achievements.
The meanings of the other options are as follows:
Coterminous: Sharing a common boundary; coextensive.
Ambient: Relating to the immediate surroundings of
Question : Crude oil is sometimes termed sweet because it is:
Option 1: sweet in taste due to dissolved sugars
Option 2: mild sweet due to low sulphur content
Option 3: less acidic
Option 4: less alkaline
Correct Answer: mild sweet due to low sulphur content
Solution : The correct option is mild sweet due to low sulphur content.
Sweet crude oil is a type of oil that contains only 1% sulphur. The term "sweet" is used to describe its mild and pleasant smell, unlike sour
Question : Select the most appropriate option to substitute the bracketed segment in the given sentence. If there is no need to substitute it, select 'No substitution required'.
He lights his pipe, (and on many an evenings he helps me with) dishes.
Option 1: and on many evenings he helped me with the
Option 2: and on many evenings he helps me with the
Option 3: and many an evenings he helps me with the
Option 4: No substitution required
Correct Answer: and on many evenings he helps me with the
Solution : The correct choice is the second option.
Explanation: The sentence requires consistency in verb tense between the two clauses connected by "and". The initial part of the sentence, "he lights his pipe", is in the present
Question : Concerning the archaeological sites of the Harappan Civilization, which of the following pairs is incorrect?
Option 1: Rakhigarhi-Punjab
Option 2: Lothal-Gujarat
Option 3: Kalibangan-Rajasthan
Option 4: Alamgirpur-Uttar Pradesh
Correct Answer: Rakhigarhi-Punjab
Solution : The correct answer is Rakhigarhi-Punjab.
Question : The rapidly growing mass of phytoplankton covering the surface water of a lake or pond is known as:
Option 1: eutrophication
Option 2: water bloom
Option 3: water pollution
Option 4: water hyacinth
Correct Answer: eutrophication
Solution : The correct answer is eutrophication.
When nutrient levels in any water body increase, especially that of phosphate and nitrate, which leads to increases in the biomass of the water body, this process is known as eutrophication. Its initial stage is characterised by the rapid
Question : Directions: Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation. (440 * 11) * 85 * 57 * (34 * 3)
Option 1: +, −, =, ÷, +
Option 2: ×, =, −, ÷, +
Option 3: +, ×, =, ÷, +
Option 4: ÷, −, =, −, ×
Correct Answer: ÷, −, =, −, ×
Solution : Given: (440 * 11) * 85 * 57 * (34 * 3)
Let's check the given options – First option: +, −, =, ÷, + ⇒ (440 + 11) − 85 = 57 ÷ (34 + 3) L.H.S. = 451 −
Question : In programming, repeating some statements is usually called
Option 1: Compiling
Option 2: Structure
Option 3: Looping
Option 4: Control structure
Correct Answer: Looping
Solution : The correct answer is Looping.
In programming, repeating a series of commands is known as "looping." Loops are used to run code many times, either depending on a specific condition or for a set number of iterations, to speed up the process of executing repeated
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