Q. The average of three numbers is 15. If one number is increased by 5, what will be the new average?
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Solution
Total of three numbers = 3 * 15 = 45.\n\nNew total = 45 + 5 = 50.\n\nNew average = 50 / 3 = 16.67.
Correct Answer:
B
— 16
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Q. The average of three numbers is 15. If one of the numbers is increased by 5, what will be the new average?
Show solution
Solution
Total of three numbers = 3 * 15 = 45. New total after increasing one number by 5 = 45 + 5 = 50. New average = 50 / 3 = 16.67.
Correct Answer:
B
— 16
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Q. The average of three numbers is 30. If one number is removed, the average becomes 25. What is the removed number?
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Solution
Let the three numbers be x, y, z. (x + y + z) / 3 = 30 => x + y + z = 90. After removing one number, (x + y) / 2 = 25 => x + y = 50. Therefore, removed number = 90 - 50 = 40.
Correct Answer:
A
— 35
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Q. The average of three numbers is 30. If one of the numbers is increased by 10, what will be the new average?
A.
30
B.
32
C.
33.33
D.
35
Show solution
Solution
The sum of the three numbers is 3 * 30 = 90. If one number is increased by 10, the new sum is 90 + 10 = 100. The new average = 100 / 3 = 33.33.
Correct Answer:
C
— 33.33
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Q. The average of three numbers is 40. If the first number is increased by 10, what will be the new average?
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Solution
The sum of the three numbers is 3 * 40 = 120. Increasing the first number by 10 gives a new sum of 120 + 10 = 130. The new average is 130 / 3 = 43.33, which rounds to 42.
Correct Answer:
A
— 42
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Q. The average of two numbers is 30. If one number is 10 more than the other, what are the two numbers?
A.
20, 40
B.
25, 35
C.
30, 30
D.
15, 45
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Solution
Let the numbers be x and x+10. (x + (x + 10)) / 2 = 30. Solving gives x = 25, so numbers are 25 and 35.
Correct Answer:
B
— 25, 35
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Q. The average of two numbers is 30. If one number is 20, what is the other number?
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Solution
Mean = (20 + x) / 2 = 30.\n\n20 + x = 60\n\nx = 60 - 20 = 40.
Correct Answer:
A
— 40
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Q. The average of two numbers is 36. If one number is 40, what is the other number?
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Solution
Let the other number be x. (40 + x) / 2 = 36. Solving gives x = 32.
Correct Answer:
A
— 32
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Q. The average score of 5 students is 80. If one more student joins and the new average becomes 82, what is the score of the new student?
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Solution
Total score of 5 students = 5 * 80 = 400. New total score for 6 students = 6 * 82 = 492. Score of new student = 492 - 400 = 92.
Correct Answer:
B
— 86
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Q. The average score of a student in five subjects is 72. If the student scores 80 in the sixth subject, what will be the new average?
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Solution
New average = (72 * 5 + 80) / 6 = (360 + 80) / 6 = 440 / 6 = 73.33, which rounds to 74.
Correct Answer:
C
— 76
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Q. The average speed of gas molecules is given by the formula:
A.
(8kT/πm)^(1/2)
B.
(3kT/m)^(1/2)
C.
(2kT/m)^(1/2)
D.
(kT/m)^(1/2)
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Solution
The average speed of gas molecules is given by the formula v_avg = (8kT/πm)^(1/2), where k is the Boltzmann constant, T is the temperature, and m is the mass of a gas molecule.
Correct Answer:
A
— (8kT/πm)^(1/2)
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Q. The average speed of gas molecules is given by which of the following expressions? (2022)
A.
√(8RT/πM)
B.
√(3RT/M)
C.
√(2RT/M)
D.
√(RT/M)
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Solution
The average speed of gas molecules is given by the expression v_avg = √(8RT/πM), where R is the universal gas constant, T is the temperature, and M is the molar mass of the gas.
Correct Answer:
A
— √(8RT/πM)
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Q. The average speed of gas molecules is given by which of the following formulas? (2023)
A.
(8kT/πm)^(1/2)
B.
(3kT/m)^(1/2)
C.
(2kT/m)^(1/2)
D.
(kT/m)^(1/2)
Show solution
Solution
The average speed of gas molecules is given by the formula v_avg = sqrt(8kT/πm), where k is the Boltzmann constant, T is the temperature, and m is the mass of a molecule.
Correct Answer:
A
— (8kT/πm)^(1/2)
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Q. The Ayushman Bharat scheme is primarily aimed at providing which of the following? (2018)
A.
Free education for all
B.
Health insurance for the poor
C.
Housing for the homeless
D.
Employment for youth
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Solution
The Ayushman Bharat scheme aims to provide health insurance coverage to economically vulnerable families.
Correct Answer:
B
— Health insurance for the poor
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Q. The bending of light as it passes from one medium to another is called _____. (2023)
A.
Reflection
B.
Refraction
C.
Diffraction
D.
Dispersion
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Solution
Refraction is the bending of light as it passes from one medium to another due to a change in speed.
Correct Answer:
B
— Refraction
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Q. The Berlin Conference of 1884-85 is significant for its impact on which aspect of border management?
A.
Establishing trade routes in Asia
B.
Dividing Africa among European powers
C.
Defining the borders of the Ottoman Empire
D.
Creating buffer states in Europe
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Solution
The Berlin Conference of 1884-85 is significant for dividing Africa among European powers, leading to arbitrary borders that disregarded ethnic and cultural divisions.
Correct Answer:
B
— Dividing Africa among European powers
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Q. The Berlin Conference of 1884-85 is significant for which of the following reasons?
A.
It marked the end of the Cold War.
B.
It regulated European colonization and trade in Africa.
C.
It established the United Nations.
D.
It initiated the process of decolonization.
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Solution
The Berlin Conference regulated European colonization and trade in Africa, leading to the 'Scramble for Africa'.
Correct Answer:
B
— It regulated European colonization and trade in Africa.
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Q. The Beti Bachao Beti Padhao scheme primarily aims to address which social issue? (2015)
A.
Child Marriage
B.
Gender Discrimination
C.
Unemployment
D.
Poverty
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Solution
The Beti Bachao Beti Padhao scheme, launched in 2015, aims to prevent gender discrimination and promote the education of girls.
Correct Answer:
B
— Gender Discrimination
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Q. The Beti Bachao Beti Padhao scheme primarily focuses on which of the following? (2015)
A.
Promoting women's entrepreneurship
B.
Preventing female foeticide and promoting education for girls
C.
Providing financial aid for women's health
D.
Encouraging women in sports
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Solution
The Beti Bachao Beti Padhao scheme aims to prevent female foeticide and promote education for girls.
Correct Answer:
B
— Preventing female foeticide and promoting education for girls
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Q. The Bhakti movement in India primarily emphasized which of the following?
A.
Ritualistic practices
B.
Personal devotion to God
C.
Caste hierarchy
D.
Philosophical debates
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Solution
The Bhakti movement emphasized personal devotion to God, transcending caste and ritualistic practices.
Correct Answer:
B
— Personal devotion to God
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Q. The Bhakti movement in medieval India primarily aimed at:
A.
Promoting caste hierarchy.
B.
Encouraging communal harmony and personal devotion.
C.
Establishing a new political order.
D.
Reviving ancient Vedic rituals.
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Solution
The Bhakti movement emphasized personal devotion to God and sought to transcend caste divisions, promoting a sense of unity among diverse communities.
Correct Answer:
B
— Encouraging communal harmony and personal devotion.
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Q. The Bill of Rights, ratified in 1791, is significant in American history for which of the following reasons?
A.
It abolished slavery in the United States.
B.
It established the framework for the federal government.
C.
It enumerated specific rights and protections for individuals.
D.
It granted women the right to vote.
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Solution
The Bill of Rights is significant because it enumerated specific rights and protections for individuals, ensuring fundamental liberties such as freedom of speech and religion.
Correct Answer:
C
— It enumerated specific rights and protections for individuals.
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Q. The book was read by the students. What is the active voice of this sentence? (2023)
A.
The students read the book.
B.
The book is read by the students.
C.
The students are reading the book.
D.
The students have read the book.
Show solution
Solution
To convert from passive to active voice, identify the subject performing the action. Here, 'the students' is the subject who reads 'the book'.
Correct Answer:
A
— The students read the book.
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Q. The book was so _____ that I couldn't put it down.
A.
boring
B.
interesting
C.
dull
D.
tedious
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Solution
The word 'interesting' suggests that the book captured the reader's attention.
Correct Answer:
B
— interesting
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Q. The Booker Prize is awarded for which category? (1969)
A.
Best Film
B.
Best Novel
C.
Best Play
D.
Best Poetry
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Solution
The Booker Prize is awarded annually for the best original novel written in the English language and published in the UK.
Correct Answer:
B
— Best Novel
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Q. The Booker Prize is awarded in which category? (2018)
A.
Science
B.
Fiction
C.
Non-Fiction
D.
Poetry
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Solution
The Booker Prize is awarded for the best original novel written in the English language.
Correct Answer:
B
— Fiction
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Q. The Brihadeeswarar Temple, a UNESCO World Heritage Site, is an exemplary representation of which architectural style?
A.
Chola Architecture
B.
Mughal Architecture
C.
Indo-Saracenic Architecture
D.
Dravidian Architecture
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Solution
The Brihadeeswarar Temple, built in the 11th century, is a prime example of Chola architecture, showcasing the grandeur of Dravidian style.
Correct Answer:
A
— Chola Architecture
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Q. The British East India Company's governance in India was characterized by which of the following?
A.
Direct rule from London
B.
Indirect rule through local princes
C.
Complete autonomy for Indian states
D.
Democratic governance
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Solution
The British East India Company primarily governed India through indirect rule, utilizing local princes and zamindars to maintain control.
Correct Answer:
B
— Indirect rule through local princes
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Q. The buoyant force acting on an object submerged in a fluid is equal to:
A.
The weight of the object
B.
The weight of the fluid displaced
C.
The density of the object
D.
The pressure of the fluid
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Solution
According to Archimedes' principle, the buoyant force is equal to the weight of the fluid displaced by the object.
Correct Answer:
B
— The weight of the fluid displaced
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Q. The buoyant force on an object submerged in a fluid is equal to: (2022)
A.
The weight of the object
B.
The weight of the fluid displaced
C.
The density of the object
D.
The volume of the object
Show solution
Solution
According to Archimedes' principle, the buoyant force on a submerged object is equal to the weight of the fluid displaced by the object.
Correct Answer:
B
— The weight of the fluid displaced
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