Explore topic-wise MCQs in General Knowledge.

This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.

4351.

Average age of a committee of seven trustees is the same as it was five years ago, a younger man having been substituted for one of them. How much younger was he then trustee whose place he took?

A. 34 years
B. 33 years
C. 35 years
D. 32 years
Answer» D. 32 years
4352.

If x+ y+ z=0,then x2/yx+ y2/zx+ z2/xy equal

A. 3
B. 2
C. 1
D. 0
Answer» B. 2
4353.

Find wave velocity of louder sound?

A. 100 m/s
B. 192 m/s
C. 200 m/s
D. 96 m/s
Answer» D. 96 m/s
4354.

When Phenyl Magnesium Bromide reacts with tert. butanol, which of the following is formed?

A. Tert. butyl methyl ether
B. Benzene
C. Tert. butyl benzene
D. Phenol
Answer» C. Tert. butyl benzene
4355.

Sum of all odd numbers up to 100 is

A. 5000
B. 2525
C. 2500
D. 5050
Answer» D. 5050
4356.

A debtor can pay 87 paise in the rupee, but if his creditors would take 20% of his debts, he could pay them and have Rs. 42 left. His debts and assets respectively are ?

A. Rs. 600, Rs. 522
B. Rs. 500 , Rs. 521
C. Rs. 400, Rs. 520
D. Rs. 1000, Rs. 525
Answer» B. Rs. 500 , Rs. 521
4357.

Find the number of times y1 y2 = 0 at x = 0 in 1 sec?

A. 100
B. 46
C. 192
D. 96
Answer» E.
4358.

In a public school, 1/5th of girls and 1/4th of boys are under 12 years of age. If the total strength of the school is 1000 and number of girls is 2/5th of the total, what part of the total strength of the school is accounted for by those which are 12 years or more of age ?

A. 23%
B. 45%
C. 55%
D. 77%
Answer» E.
4359.

What is the smallest number which when increased by 3 is divisible by 27, 35, 25 and 21?

A. 4731
B. 4728
C. 4725
D. 4722
Answer» E.
4360.

Two waves y1 = A cos( 0.5 πx − 100 πt)and y2 = A cos( 0.46 πx − 92πt) are travelling in a pipe placed along x-axis. Find the number of times intensity is maximum in time interval of 1 sec?

A. 4
B. 6
C. 8
D. 10
Answer» B. 6
4361.

If height h2 of water level is further decreased, then

A. cylinder will not move up and remains at its original position
B. for h2 = h/3, cylinder again starts moving up
C. for h2 = h/4, cylinder again starts moving up
D. for h2 = h/5 cylinder again starts moving up
Answer» B. for h2 = h/3, cylinder again starts moving up
4362.

A school has 5 divisions in a class IX having 60, 50, 55, 62 and 58 students. Mean marks obtained in a History test were 56, 64, 72, 63 and 50 by each division respectively. What is overall average of the marks per students?

A. 60.8
B. 62.4
C. 58.2
D. 56.8
Answer» B. 62.4
4363.

A man bought a house for Rs. 5 lakhs and rents it. He puts 12.5% of each month’s rent aside for repairs, pays Rs. 1660 as annual taxes and realises 10% on his investment thereafter. The monthly rent of the house is?

A. Rs. 5000
B. Rs. 4920
C. Rs. 2500
D. Rs. 2460
Answer» C. Rs. 2500
4364.

Inna dark room with ambient temperature T0,na black body is kept at a temperature T. Keeping thenntemperaturenof the black body constant (at T), sunrays are allowed to fall on the blacknbody through a hole innnthenroof of the dark room. Assuming that there is no change in the ambientntemperature of the room, which ofnnthenfollowing statement(s) is/are correct?

A. The quantity of radiation absorbed by the black body in unit time will increase.
B. Since emissivity = absorptivity, hence the quantity of radiation emitted by black body in unit time will increase
C. Black body radiates more energy in unit time in the visible spectrum
D. The reflected energy in unit time by the black body remains same.
Answer» E.
4365.

Sum of three prime numbers is 100. If one of them exceeds another by 36, then one of the numbers is

A. 67
B. 41
C. 29
D. 7
Answer» B. 41
4366.

An increase of Rs. 60 in the monthly salary of Madan made it 50% of the monthly salary of Kamal. What is Madan’s present monthly salary?

A. Rs. 180
B. Rs. 240
C. Rs. 300
D. Data inadequate
Answer» E.
4367.

A ball is dropped from a height of 12 m and it rebounds 1/2 of the distance it falls. If it continues to fall and rebound in this way, how far will it travel before coming to rest?

A. 60 m
B. 48 m
C. 30 m
D. 36 m
Answer» E.
4368.

A’s marks in Biology are 20 less than 25% of the total marks obtained by him in Biology, Maths and Drawing. If his marks in Drawing be 50, what are his marks in Maths

A. 40
B. 45
C. 50
D. Cannot be determined
Answer» E.
4369.

HCF and LCM of two numbers is given. It is possible to ind out the two numbers uniquely ifI. either sum or difference between the two numbers is known.II. HCF of two numbers = LCM of two numbers.III. (LCM/HCF)= Prime number.

A. I, II and III
B. II and III only
C. IIonly
D. I and II only
Answer» B. II and III only
4370.

HCF of y3 - 4y and 4y (y3 + 8) is

A. (y + 2)(y2- 2y + 4)
B. 2 (y + 2)
C. y - 2
D. y(y + 2)
Answer» E.
4371.

What is the remainder when 2050 x 2071 x 2095 is divided by 23?

A. 3
B. 6
C. 12
D. 17
Answer» C. 12
4372.

Function x = A sin2 ωt B cos2 ωt C sin ωt cos ωt represents SHM

A. for any value of A, B and C (except C = 0)
B. if A = −B; C = 2B, amplitude = B 2
C. if A = B; C = 0
D. if A = B; C = 2B, amplitude = B
Answer» D. if A = B; C = 2B, amplitude = B
4373.

A number when divided by sum of 555 and 445 gives two times their diference as quotient and 30 as remainder. The number is

A. 220030
B. 22030
C. 1250
D. 1220
Answer» B. 22030
4374.

solid cylinder of mass m and radius r is rolling on a rough inclined plane of inclination θ. The coefficient of friction between the cylinder and incline is μ. Then___.

A. frictional force is always μmg cos θ
B. friction is a dissipative force
C. by decreasing θ, frictional force decreases
D. friction opposes translation and supports rotation.
Answer» E.
4375.

In a city, 35% of the population is composed of migrants, 20% of whom are from rural areas. Of the local population, 48% is female while this figure for rural and urban migrants is 30% and 40% respectively. If the total population of the city is 728400, what is its female population?

A. 324138
B. 349680
C. 509940
D. None
Answer» E.
4376.

Given a sample of Radium-226 having half-life of 4 days. Find the probability, a nucleus disintegrates after 2 half lives.

A. 1
B. 1/2
C. 1.5
D. 3/4
Answer» C. 1.5
4377.

When x+ y+ z = 9 and xy +yz + zx = 11, then x3 - y3 - z3 - 3xyz equals

A. 48
B. 432
C. 192
D. 384
Answer» C. 192
4378.

Anil wants to divide Rs.100 into a number of bags so that one can ask for any amount between Rs.1 and Rs.100, he can give the proper amount by giving certain number of these bags without taking out the amount from them. What is the minimum number of bags he will require if each bag has whole number of rupees?

A. 8
B. 7
C. 6
D. 5
Answer» C. 6
4379.

What is the harmonic mean of two numbers whose geometric mean and arithmetic mean is 8 and 5 respectively?

A. 14.6
B. 13.5
C. 12
D. 12.8
Answer» C. 12
4380.

An Egyptian fraction has a numerator equal to 1, and its denominator is a positive integer. What is the maximum number of different Egyptian fraction such that their sum is equal to 1, and their denominators are equal to 10 or less?

A. 9
B. 7
C. 5
D. 3
Answer» E.
4381.

In an examination, 1100 boys and 900 girls appeared. 50% of the boysand 40% of the girls passed the examination. The percentage of candidates failed is ?

A. 45
B. 45.5
C. 54.5
D. 59.2
Answer» D. 59.2
4382.

Alex secured 50% marks in Hindi, 60% in English and 70% in Maths as well as in Science. What were his total marks if the maximum marks obtainable in each of these 4 subjects was 50 ?

A. 125
B. 120
C. 250
D. 150
Answer» B. 120
4383.

If g = 10100 and H = 10g, then in which interval does g! = 1 . 2 .3 ........ 10100 lie?

A. 10H u003c g! u003c10H
B. 10H u003c g! u003c 10
C. H u003c g! u003c 10H
D. 10H u003c g! u003c H
Answer» C. H u003c g! u003c 10H
4384.

If x - y = 1, then x3 - y3 - 3xy equals

A. 0
B. 1
C. 2
D. None of these
Answer» C. 2
4385.

If x = b c, y = c a, z = a b, thenx2+ y2+ z2 - 2xy - 2xz+ 2yz is equal to

A. a + b + c
B. abc
C. 4b^2
D. a^2 + b^2
Answer» D. a^2 + b^2
4386.

If a and b are prime numbers, which of the following is true?I. a2 has three positive integer factors.II. ab has four positive integer factors.III. a3 has four positive integer factors.Codes

A. I and II only
B. All of these
C. II and III only
D. None of these
Answer» C. II and III only
4387.

Sandy spends 40% of his salary on food articles and one third of the remaining on transport. If he saves Rs. 450 per month which is half of the balance after spending on food items and transport, what is his monthly salary-?

A. Rs. 4500
B. Rs. 2250
C. Rs. 1125
D. Rs. 2500
Answer» C. Rs. 1125
4388.

If (a, n)! is defined as product of n consecutive numbers starting from a, where a and n are both natural numbers, and if H is the HCF of (a, n)! and n!, then what can be said about H?

A. h = a!
B. h ≥ n!
C. h = n!
D. h ≥ a * n
Answer» D. h ≥ a * n
4389.

The price of jute has been reduced by 20%. If the reduced price is Rs. 800 per quintal, the original price per quintal was?

A. Rs. 900
B. Rs. 640
C. Rs. 960
D. Rs. 1000
Answer» E.
4390.

Halcyon

A. tempestuous
B. unscientific
C. obtrusive
D. advanced
Answer» B. unscientific
4391.

What is the binary equivalent of Gray code 11100?

A. 10010
B. 00111
C. 10101
D. 11011
Answer» B. 00111
4392.

Peter spends 30% of his income on scooter petrol, ¼ of the remainingon house rent and the balance on food. If he spends Rs. 300 on petrol then what is the expenditure on house rent?

A. Rs 525
B. Rs. 1000
C. Rs 675
D. Rs. 175
Answer» E.
4393.

Countenance

A. verify
B. force
C. genuine
D. deny
Answer» E.
4394.

If (12A7C )16 = (X)8 then value of X is

A. 225714
B. 17325
C. 425174
D. 225174
Answer» E.
4395.

In a library, 20% books are Hindi , 50% of the remaining are in English and the remaining 9000 are in various other languages. What is the total number of books in English?

A. 4000
B. 3000
C. 2250
D. None of these
Answer» E.
4396.

Denigrate

A. uphold
B. blame
C. hide
D. query
Answer» B. blame
4397.

What is the equivalent of (10110011100011110000)2 n base 32?

A. 11 14 23 16
B. 11 9 7 16
C. 22 14 7 16
D. 11 9 23 31
Answer» D. 11 9 23 31
4398.

Callow

A. gentle
B. kind
C. urbane
D. sensitive
Answer» D. sensitive
4399.

Disconsolate

A. rude
B. anguished
C. joyful
D. inhospitable
Answer» D. inhospitable
4400.

A reduction of 12.5% in the price of a dining table brought down its price to Rs. 4375. The original price (in Rs.) of the table was?

A. 6000
B. 5400
C. 5200
D. 5000
Answer» E.