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MCQOPTIONS
This section includes 63850 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 59751. |
X-rays can be deflected by: |
| A. | electric field |
| B. | none of the fields |
| C. | magnetic field |
| D. | electromagnetic field |
| Answer» C. magnetic field | |
| 59752. |
X-rays do not show the phenomenon of |
| A. | Diffraction |
| B. | Polarisation |
| C. | Deflection by electric field |
| D. | Interference |
| Answer» D. Interference | |
| 59753. |
X-rays of wavelength of 0.0650 nm undergo Compton scattering from free electrons in carbon. In photons are scatted at 90° relative to the incident rays, what percentage of initial X-ray photon energy is transferred to an electron in such a scattering? (h = 6.63 × 10-34 J s, me = 9.11 × 10-31 kg, c = 3 × 108 m/s) |
| A. | 3.6% |
| B. | 2.4% |
| C. | 1.2% |
| D. | 4.6% |
| Answer» B. 2.4% | |
| 59754. |
X-rays of wavelength of 0.0650 nm undergo Compton scattering from free electrons in a target. What is the wavelength of photons scattered at 90° relative to the incident rays? (h = 6.63 × 10-34 J s, me = 9.11 × 10-31 kg, c = 3 × 108 m/s) |
| A. | 0.0687 nm |
| B. | 0.0024 nm |
| C. | 0.0674 nm |
| D. | 0.0626 nm |
| Answer» D. 0.0626 nm | |
| 59755. |
X-rays of wavelength of 0.4500 nm are scattered from free electrons in a target. What is the wavelength of photons scattered at 60° relative to the incident rays? (h = 6.63 × 10-34 Js, me = 9.11 × 10-31 kg, c = 3 × 108 m/s) |
| A. | 0.4476 nm |
| B. | 0.4512 nm |
| C. | 0.4524 nm |
| D. | 0.4488 nm |
| Answer» C. 0.4524 nm | |
| 59756. |
X said to Y that my sister's father-in-law is your husband's father. How are X and Y related? |
| A. | Y is wife of X's sister's husband's brother |
| B. | Y is sister of X's sister's husband |
| C. | X is husband of Y's husband's sister |
| D. | X is wife of Y's husband's brother |
| Answer» B. Y is sister of X's sister's husband | |
| 59757. |
X sells his goods 20% cheaper than Y and 20% dearer than Z. How many % is Z's goods cheaper/dearer than Y's? |
| A. | 33.33% |
| B. | 50% |
| C. | 40% |
| D. | 42.5% |
| Answer» B. 50% | |
| 59758. |
X sells his goods 25% cheaper than Y and 25% dearer than Z. How much percentage is Z's goods cheaper than Y? |
| A. | \(\frac{{100}}{3}\% \) |
| B. | 40% |
| C. | 50% |
| D. | \(\frac{{200}}{3}\% \) |
| Answer» C. 50% | |
| 59759. |
X sits between- |
| A. | R and Q |
| B. | W and R |
| C. | Q and Y |
| D. | S and W |
| Answer» C. Q and Y | |
| 59760. |
X sells shoes to Y at a profit of 20% and Y sells the same shoes to Z at a profit of 23%. If Z pays Rs. 3321 for the shoes, what was the cost price (in Rs) of shoes for X? |
| A. | 1950 |
| B. | 2450 |
| C. | 2250 |
| D. | 2045 |
| Answer» D. 2045 | |
| 59761. |
X takes thrice as much time as Y takes or four times as much time as Z takes to finish a piece of work. Working together, they can finish the work in 6 days. Y alone can do the same work in: |
| A. | 14 days |
| B. | 16 days |
| C. | 17 days |
| D. | 15 days |
| Answer» C. 17 days | |
| 59762. |
X starts a business with Rs.25,000. After 4 months Y joins him with Rs.20,000. What will be the ratio of their profit at the end of the year? |
| A. | 3 : 2 |
| B. | 1 : 2 |
| C. | 15 : 8 |
| D. | 7 : 5 |
| Answer» D. 7 : 5 | |
| 59763. |
X starts walking from the place 'A'. He walks 4 km East and reaches place 'B', then turns right. After going 3 km straight he stops at the place 'C'. What is the shortest distance between 'A' and 'C’? |
| A. | 4 km |
| B. | 5 km |
| C. | 6 km |
| D. | 7 km |
| Answer» C. 6 km | |
| 59764. |
X starts a business with Rs. 80000. After 6 months Y joins X with Rs. 100000. After 2 years, what will be the ratio of profit of X and Y? |
| A. | 16 : 15 |
| B. | 4 : 5 |
| C. | 8 : 9 |
| D. | 14 : 15 |
| Answer» B. 4 : 5 | |
| 59765. |
X takes 10 days less than the time taken by Y to finish a piece of work. X and Y together can do it in 12 days. In how many days Y-alone can finish the work? |
| A. | 22.5 days |
| B. | 30 days |
| C. | 28 days |
| D. | 25 days |
| Answer» C. 28 days | |
| 59766. |
X takes 4 days to complete one-third of a piece of work; Y takes 3 days to complete one-sixth of the same work, and Z takes 5 days to complete half of the work. If all the three work together for 3 days and X and Z quit, how long will it take for Y to complete the remaining task alone? |
| A. | 6 days |
| B. | 7 days |
| C. | 8.1 days |
| D. | 5.1 days |
| Answer» E. | |
| 59767. |
X walks 3 km towards west, and then turns and travels 4 km towards north. The shortest distance between the start and the end point of X’s journey is ______. |
| A. | 7 km |
| B. | 5 km |
| C. | 6 km |
| D. | 8 km |
| Answer» C. 6 km | |
| 59768. |
X walked 15 m south, turned left 15 m and turned left and walked for 15 m. How far and in which direction is he form the starting position? |
| A. | 15 m north |
| B. | 15 m east |
| C. | 15 m south |
| D. | 15 m west |
| Answer» C. 15 m south | |
| 59769. |
x, y and z all are positive number. If 3x > 9y and 2y > 4z, then which of the following is TRUE? |
| A. | x > y > z |
| B. | x > z > y |
| C. | z > y > x |
| D. | y > x > z |
| Answer» B. x > z > y | |
| 59770. |
X took a loan of Rs 16000 with simple interest for as many years as the rate of interest. If he paid Rs 4840 as interest at the end of the period, what was the rate of the interest? |
| A. | 5.5 percent |
| B. | 6.0 percent |
| C. | 5.0 percent |
| D. | 6.5 percent |
| Answer» B. 6.0 percent | |
| 59771. |
X took a loan of Rs. 5000 on simple interest, the rate of interest is the same as the number of years for which the loan was taken. If the interest paid was Rs. 1800, then what was the rate of interest? |
| A. | 6.5% |
| B. | 6% |
| C. | 5% |
| D. | 5.5% |
| Answer» C. 5% | |
| 59772. |
X works twice as fast as Y. If Y can complete a job alone in 12 days, then in how many days can X and Y together finish the job? |
| A. | 18 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 59773. |
X, Y, and Z are non-zero consecutive integers. If X = 2Y and Y ≠ Z, then which of the following statements can be valid? |
| A. | X = Y + Z |
| B. | X – Y = Z |
| C. | X < Z |
| D. | All the above statements can be valid |
| Answer» D. All the above statements can be valid | |
| 59774. |
X = X1X0 and Y = Y1Y0 are 2-bit binary numbers. The Boolean function S that satisfies the condition “If X > Y, then S = 1”, in its minimized form, is |
| A. | X1Y1 + X0Y0 |
| B. | X1Y̅1 + X0Y̅0Y̅1 + X0Y̅0X1 |
| C. | X1Y̅1X0Y̅0 |
| D. | X1Y1 + X0Y̅0Y1 + X0Y̅0X̅1 |
| Answer» C. X1Y̅1X0Y̅0 | |
| 59775. |
X, Y and Z can complete a work alone in 24, 36 and 18 days respectively. In how many days can X, Y and Z together complete 1/2 of the same work ? |
| A. | 10 days |
| B. | 6 days |
| C. | 4 days |
| D. | 8 days |
| Answer» D. 8 days | |
| 59776. |
X, Y and Z are partners in a company. In one year X receives 1/4 part of profit, Y receives 1/5 part of profit and Z receives Rs. 22000. How much amount (in Rs.) will X get as profit? |
| A. | 10000 |
| B. | 12000 |
| C. | 15000 |
| D. | 18000 |
| Answer» B. 12000 | |
| 59777. |
x, y and z are prime numbers such that x + y + z = 38. What is the maximum value of x? |
| A. | 19 |
| B. | 23 |
| C. | 31 |
| D. | 29 |
| Answer» D. 29 | |
| 59778. |
x, y and z are real numbers. If x3 + y3 + z3 = 13, x + y + z = 1 and xyz = 1, then what is the value of xy + yz + zx? |
| A. | 1 |
| B. | -1 |
| C. | 3 |
| D. | -3 |
| Answer» E. | |
| 59779. |
X, Y and Z are three contestants in a race of 1000 m. Assume that all run with different uniform speeds. X gives Y a start of 40 m and X gives Z a start of 64 m. If Y and Z were to complete in a race of 1000 m, how much meters start will Y give to Z ? |
| A. | 20 |
| B. | 25 |
| C. | 30 |
| D. | 35 |
| Answer» C. 30 | |
| 59780. |
X, Y and Z are three uncorrelated variables having variances \(\sigma_x^2, \sigma_y^2 \:and\:\sigma_z^2\) respectively, then the correlation between X + Y and Y + Z is: |
| A. | 1 / 2 |
| B. | 1 |
| C. | none of these |
| D. | 0 |
| Answer» D. 0 | |
| 59781. |
X, Y and Z bought a field on an annual rent of Rs. 415. If X grazed 25 cows for 6 months, Y grazed 40 cows for 8 months and Z grazed 30 cows for a complete year, what was the share of the rent given by Y? |
| A. | Rs. 154 |
| B. | Rs. 120 |
| C. | Rs. 160 |
| D. | Rs. 150 |
| Answer» D. Rs. 150 | |
| 59782. |
X, Y and Z can do a piece of work in 30 days, 45 days and 90 days respectively. In how many days can the work be completed if X is assisted by Y and Z together, on every second day? |
| A. | 10 days |
| B. | 20 days |
| C. | 15 days |
| D. | 30 days |
| Answer» C. 15 days | |
| 59783. |
x, y and z can complete a piece of work in 9, 18 and 24 days respectively, They started working together, but y and z left work 3 days and 2 days before the completion of the work respectively. What was the ratio of contribution of y to that of z in the completed piece of work? |
| A. | 4 : 5 |
| B. | 3 : 2 |
| C. | 2 : 3 |
| D. | 1 : 1 |
| Answer» E. | |
| 59784. |
X, Y and Z can complete a piece of work in 8, 20 and 25 days respectively. Working together, they will complete the same work in: |
| A. | \(\frac{{180}}{{43}}\) days |
| B. | \(\frac{{162}}{{43}}\) days |
| C. | \(\frac{{200}}{{43}}\) days |
| D. | \(\frac{{172}}{{43}}\) days |
| Answer» D. \(\frac{{172}}{{43}}\) days | |
| 59785. |
X, Y and Z can complete a work in 15, 45 and 90 days respectively. In how many days X, Y and Z together can complete the same work? |
| A. | 12 |
| B. | 11 |
| C. | 9 |
| D. | 10 |
| Answer» E. | |
| 59786. |
X, Y and Z can do a piece of work in 30, 40 and 50 days respectively. All three of them began the work together but Y left 4 days before completion of the work. In how many days was the work completed? |
| A. | 660/47 |
| B. | 640/47 |
| C. | 680/47 |
| D. | 665/47 |
| Answer» B. 640/47 | |
| 59787. |
X, Y and Z can finish a piece of work in 12, 8 and 24 days respectively. In how many days will three of them together take to complete the same work? |
| A. | 6 days |
| B. | 3 days |
| C. | 5 days |
| D. | 4 days |
| Answer» E. | |
| 59788. |
X, Y and Z can separately do a work in 12, 15 and 20 days respectively. They started to work together but Z left after 2 days. In how many days will the remaining work be completed by X and Y? |
| A. | 2 days |
| B. | 4 days |
| C. | 5 days |
| D. | 3 days |
| Answer» C. 5 days | |
| 59789. |
X, Y, and Z together can complete a work in 20 days. Y and Z can complete the same work in 30 days. In how many days can X complete the same work alone? |
| A. | 60 |
| B. | 45 |
| C. | 40 |
| D. | 50 |
| Answer» B. 45 | |
| 59790. |
X, Y and Z start at some point and same time in the same direction to run around a circular stadium. X completes a round in 252 seconds, Y in 308 seconds and Z in 198 seconds. After what time will they meet again at the starting point? |
| A. | 26 minutes 18 seconds |
| B. | 42 minutes 36 seconds |
| C. | 45 minutes |
| D. | 46 minutes 12 seconds |
| Answer» E. | |
| 59791. |
X, Y and Z take 18 days to complete a piece of work. If X works alone he finishes the work in 36 days and if Y works alone he finishes it in 60 days. How long will it take Z to complete the work alone?A. 78 daysB. 90 daysC. 96 daysD. 14 days |
| A. | B |
| B. | A |
| C. | D |
| D. | C |
| Answer» B. A | |
| 59792. |
X, Y and Z travel from the same place with uniform speeds 4 km/hr, 5 km/hr and 6 km/hr respectively. Y starts 2 hours after X. How long after Y must Z start in order that they overtake X at the same instant? |
| A. | \(\frac{3}{2} hours\) |
| B. | \(\frac{4}{3} hours\) |
| C. | \(\frac{9}{8} hours\) |
| D. | \(\frac{11}{8} hours\) |
| Answer» C. \(\frac{9}{8} hours\) | |
| 59793. |
x2 - 12x + 36 is equal to _____? |
| A. | (x - 6)2 |
| B. | (x + 6)2 |
| C. | (x - 9)(x - 4) |
| D. | (x - 12)(x - 3) |
| Answer» B. (x + 6)2 | |
| 59794. |
x, y be two acute angles, x + y < 90° and sin(2x - 20°) = cos(2y + 20°), the value of tan(x + y) is: |
| A. | √3 |
| B. | 1/√3 |
| C. | 1 |
| D. | 2 + √2 |
| Answer» D. 2 + √2 | |
| 59795. |
X + Y means X is the daughter of Y, X - Y means X is the husband of Y, X × Y means X is the brother of Y. If A + B × C, which of the following is true? |
| A. | A is niece of C |
| B. | A is daughter of C |
| C. | A is the cousin of C |
| D. | A is the daughter - in - law of C |
| Answer» B. A is daughter of C | |
| 59796. |
X + Y means X is the daughter of Y, XY means X is the husband of Y, X × Y means X is the brother of Y.If A × B + C, then which of the following is true? |
| A. | A is the brother of C |
| B. | A is the daughter of C |
| C. | A is the son of C |
| D. | A is the father of C |
| Answer» D. A is the father of C | |
| 59797. |
x2 - y2 - 9z2 + 6yz is factorized as |
| A. | (x+y-3z)(x+y+3z) |
| B. | (x-y-3z)(x-y+2z) |
| C. | (x+y-3z)(x-y+3z) |
| D. | (x-2y+3z)(x-y+3z) |
| Answer» D. (x-2y+3z)(x-y+3z) | |
| 59798. |
X, Y, Z, P, Q and R are sitting in a row facing north. X is the neighbour of Y and P. Q is the neighbour of Z and R, P is to the right of X and P and Z are immediate neighbours.Which pair sits on the extreme ends? |
| A. | Y, P |
| B. | Y, R |
| C. | X, P |
| D. | P, Z |
| Answer» C. X, P | |
| 59799. |
\(x^2 \left(\dfrac{\partial z}{\partial x}\right)^2 = Z\left(Z - y \dfrac{\partial z}{\partial y}\right)\) is a partial differential equation of: |
| A. | first order and first degree |
| B. | second order and second degree |
| C. | first order and second degree |
| D. | second order and first degree |
| Answer» D. second order and first degree | |
| 59800. |
(x2 – y – x + xy) is equal to: |
| A. | (x + 1)(y – x) |
| B. | (y – 1)(x + y) |
| C. | (x – 1)(x + y) |
| D. | (x + 1)(x – y) |
| Answer» D. (x + 1)(x – y) | |