RRB NTPC CBT-1 Mock Test 4 (Perfect Generation)
Practice RRB NTPC CBT-1 Mock Test 4 (Perfect Generation) online for free with answers, explanations, timer-based mock test, 100 questions, and 100 marks.
Which planet is closest to the Sun?
The correct answer is Mercury.
Which metal is liquid at room temperature?
The correct answer is Mercury.
Which element has the atomic number 1?
The correct answer is Hydrogen.
In computing, what does HTTP stand for?
HTTP stands for Hyper Text Transfer Protocol.
Who wrote the Indian National Anthem?
The correct answer is Rabindranath Tagore.
Who discovered America?
The correct answer is Christopher Columbus.
Which is the longest river in the world?
The correct answer is Nile.
What is the official currency of Russia?
The currency of Russia is Ruble.
Who invented the telephone?
The correct answer is Alexander Graham Bell.
Who painted the Mona Lisa?
The correct answer is Leonardo da Vinci.
Which is the smallest continent by land area?
The correct answer is Australia.
Deficiency of Vitamin B1 causes which of the following diseases?
Deficiency of Vitamin B1 leads to Beri-Beri.
In which year did India gain independence?
The correct answer is 1947.
Who is the author of the famous book 'My Experiments with Truth'?
'My Experiments with Truth' was written by Mahatma Gandhi.
What is the SI unit of Electric Current?
The SI unit of Electric Current is Ampere.
Which gland is known as the master gland?
The correct answer is Pituitary Gland.
Who is credited with the invention of the Light Bulb?
The Light Bulb was invented by Thomas Edison.
Who is known as the Iron Man of India?
The correct answer is Sardar Vallabhbhai Patel.
Which instrument is used to measure atmospheric pressure?
The correct answer is Barometer.
What is the capital of France?
The capital of France is Paris.
What does Article 21 of the Indian Constitution deal with?
Article 21 guarantees Protection of Life and Personal Liberty.
Who was the first woman Prime Minister of India?
The correct answer is Indira Gandhi.
What is the hardest natural substance on Earth?
The correct answer is Diamond.
Which acid is present in lemons?
The correct answer is Citric acid.
Who was the founder of the Maurya dynasty?
The Maurya dynasty was founded by Chandragupta Maurya.
What is the currency of Japan?
The correct answer is Yen.
What is the chemical symbol for Gold?
The correct answer is Au.
In which state is Gir National Park located?
Gir National Park is situated in Gujarat.
What is the pH value of pure water?
The correct answer is 7.
Which planet in our solar system is known as the 'Red Planet'?
Mars is known as the Red Planet.
Tehri dam is built across which river?
The Tehri dam is built on the Bhagirathi river.
Which is the highest civilian award in India?
The correct answer is Bharat Ratna.
Which ocean is the largest?
The correct answer is Pacific Ocean.
Where is the headquarters of FAO located?
The headquarters of FAO is in Rome.
Which state has the longest coastline in India?
The correct answer is Gujarat.
Which is the largest bone in the human body?
The correct answer is Femur.
What is the chemical formula for Sulphuric Acid?
The chemical formula for Sulphuric Acid is H2SO4.
In which year did the Revolt of take place?
The Revolt of took place in the year 1857.
Which gas is most abundant in the Earth's atmosphere?
The correct answer is Nitrogen.
What is the capital of Australia?
The correct answer is Canberra.
A can do a piece of work in 20 days and B can do it in 28 days. In how many days can they complete the work together?
Efficiency sum = 1/20 + 1/28. Total days = 11.67.
A and B together can do a piece of work in 7 days. A alone can do it in 11 days. In how many days can B alone complete the work?
1/B = 1/7 - 1/11. Days = 19.25.
A train 105m long is running at a speed of 50 km/hr. How much time will it take to cross a pole?
Time = Distance/Speed = 105 / (50 * 5/18) = 7.6 sec.
A train 180m long running at 94 km/hr crosses a platform of 102m. Find the time taken.
Total dist = 282. Time = 282 / (94*5/18) = 10.8 sec.
Boat speed in still water is 24 km/hr, stream is 5 km/hr. Time to row 110 km up and down?
Up = 19, Down = 29. Time = 110/19 + 110/29 = 9.6 hr.
Find the simple interest on Rs. 34000 at 5% per annum for 3 years.
SI = PTR/100 = 5100.
The difference between CI and SI for 2 years at 9% is Rs. 29. Find the principal.
Diff = P(R/100)^2. P = 3580.246913580247.
What is the compound interest on Rs. 10000 at 7% p.a. for 2 years?
CI = 10000(1+7/100)^2 - 10000 = 1449.00.
A man buys an article for Rs. 2800 and sells it at a profit of 28%. Find the selling price.
SP = CP * (1 + P/100) = 3584.
A shopkeeper marks his goods 31% above CP and allows a discount of 17%. Find profit %.
Profit % = 31 - 17 - (31*17/100) = 8.73%.
Find the single equivalent discount for successive discounts of 10% and 13%.
Formula: a + b - ab/100 = 21.70%.
In an election between two candidates, the winner got 62% votes and won by 1936 votes. Total votes?
Winner = 62%, Loser = 38%. Diff = 24%. 100% = 8066.
A student gets 20% and fails by 21 marks. Another gets 45% and gets 26 marks more than passing. Find max marks.
Difference in % = 25%. Difference in marks = 47. Max marks = 188.
A bag has Rs 1, 50p, 25p coins in ratio 3:5:5. Total amount is Rs 930. Find number of 50p coins.
Value ratio = 3x + 2.5x + 1.25x = 930. x = 137.77777777777777. 50p coins = 5*x = 688.
A mixture contains milk and water in ratio 4:2. If 11L of mixture is replaced with water, ratio becomes 1:1. Initial milk?
Formula applied. Initial milk approx 33.0L.
Average weight of 19 boys is 45 kg. If teacher is added, average increases by 1 kg. Teacher's weight?
Teacher = Old Avg + (n+1)*increase = 45 + 20*1 = 65.
A batsman averages 54 in 15 innings. He scores 102 in the next. What is his new average?
New Avg = (15*54 + 102) / 16 = 57.00.
Find the unit digit of (47)^188.
Cyclicity of powers. Unit digit is 1.
Find the LCM of 16 and 24.
LCM = (16*24)/HCF = 48.
If x + 1/x = 3, find x² + 1/x².
x² + 1/x² = a² - 2 = 3² - 2 = 7.
If x + 1/x = 5, find x³ + 1/x³.
x³ + 1/x³ = a³ - 3a = 5³ - 3(5) = 110.
The angle of elevation of a tower of height 17m from a point is 60°. Find distance from the base.
tan(60) = h/d => d = 17/√3 = 9.81m.
Length of a rectangle is increased by 15% and breadth by 11%. Find % change in area.
Formula: L + B + (L*B)/100 = 27.65%.
Find the volume of a cylinder with radius 7cm and height 17cm. (π=22/7)
V = πr²h = (22/7)*7²*17 = 2618 cm³.
Find the surface area of a sphere of radius 10cm. (π=22/7)
SA = 4πr² = 4*(22/7)*10² = 1257 cm².
The angle subtended by a diameter at any point on the circumference of a circle is:
Angle in a semicircle is always a right angle.
Tangents PA and PB are drawn to a circle. If angle APB = 38°, find angle PAB.
PA=PB, so Triangle PAB is isosceles. Angle PAB = (180 - 38)/2 = 71°.
A man travels at 24 km/h and returns at 42 km/h. Find average speed.
Avg Speed = 2xy/(x+y) = 2*24*42/(66) = 30.5 km/h.
Walking at 6 km/h, a student is late. At 8 km/h, he is early. If distance is 26 km, find difference in time in minutes.
Diff = (26/6 - 26/8) * 60 = 64 mins.
A die is thrown once. What is the probability of getting a number greater than 5?
Favorable outcomes = 1. Total = 6.
Series: 3, 6, 9, 12, ?
Difference is +3.
Series: 2, 6, 18, 54, ?
Multiplier is x3.
Series: 9, 16, 25, 36, ?
Squares of consecutive numbers.
If APPLE is coded as CRRNG, how is MANGO coded?
Shift +2 for each letter.
If DOG is coded as FQI, how is CAT coded?
Shift +2 for each letter.
Pointing to a boy, a woman said, "He is the son of the only son of my mother." How is the boy related to the woman?
Only son of mother = Brother. Son of brother = Nephew.
A+B means A is father of B. A-B means A is mother. What does P+Q-R mean for P related to R?
P is father of Q, Q is mother of R. So P is maternal grandfather.
A man walks 5 km North, turns East and walks 6 km. How far is he from start?
Pythagoras: √(5² + 6²) = 7.8.
A man faces North, turns 90° clockwise, then 135° anti-clockwise. Which direction is he facing?
Net turn = -45°. North - 45° = North-West.
Statements: All A are B. Some B are C. Conclusions: I. Some A are C. II. Some B are A.
Standard syllogism rules.
Statements: No dog is cat. All cats are mats. Conclusion: No dog is mat.
Mats can still overlap with dogs.
Analogy - INDIA : NEW DELHI :: JAPAN : ?
Capital city relationship.
Analogy - 9 : 82 :: 10 : ?
Logic is x : x²+1.
Find the odd one out: Apple, Mango, Potato, Banana
Potato is a vegetable, rest are fruits.
Find the odd one out: 16, 25, 36, 42, 49
42 is not a perfect square.
A is 17th from top and 17th from bottom. Total people?
Total = Top + Bottom - 1 = 33.
Angle between hands of a clock at 3:39?
Angle = |30H - 5.5M| = 124.5°.
Mirror image of clock showing 2:36?
Subtract from 11:60.
If today is Monday, what day will it be after 26 days?
26 % 7 = 5 odd days.
If + means -, - means x, x means /, / means +. Value of 10 x 2 - 5 + 3?
10 / 2 * 5 - 3 = 5 * 5 - 3 = 22.
Arrange in dictionary order: 1. Banish 2. Bandit 3. Bangle 4. Banquet
Alphabetical sorting.
Which word CANNOT be formed from 'INTELLIGENCE'?
A and A are not present.
How many triangles in a square with both diagonals drawn?
Standard figure counting result is 8.
If A=1, B=2, what is the sum of letters in 'CAT'?
C=3, A=1, T=20. Sum = 24.
Find the odd one out: 2, 3, 5, 7, 9, 11
9 is not a prime number.
Analogy - BIRD : WINGS :: FISH : ?
Locomotion organs.
If 1st Jan 2024 is Monday, what is 1st Jan 2025?
2024 is a leap year, so +2 odd days.
Venn Diagram: Which represents Animals, Dogs, Pets?
Dogs are animals. Pets can be dogs or other animals.
Which number replaces the question mark? 2, 5, 10, 17, ?
n^2 + 1 pattern.
A is taller than B. B is taller than C. Who is tallest?
A > B > C.