RRB(Railway) Practice Question and Answer
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Q: The specific resistance of a wire 1235 05d1f2e82c068c021a4049563
5d1f2e82c068c021a4049563- 1Varies with its lengthfalse
- 2Varies with its cross-sectionfalse
- 3Varies with its massfalse
- 4Does not depends on its length, cross section and masstrue
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Answer : 4. "Does not depends on its length, cross section and mass"
Q: Find the highest common factor of 36 and 84. 1120 05d1edd7cf5eae22172e6f381
5d1edd7cf5eae22172e6f381- 14false
- 26false
- 312true
- 418false
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Answer : 3. "12"
Q: In a triangle ABC, DE ‖ BC, AD=2.5 cm, DB=5cm, AE=2 cm and BC=9cm. Find the EC and DE, respectively. 1070 05d1ef5cff5eae22172e6f4a7
5d1ef5cff5eae22172e6f4a7- 14cm and 3 cmtrue
- 25 cm and 3cmfalse
- 32cm and 4 cmfalse
- 44 cm and 5 cmfalse
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Answer : 1. "4cm and 3 cm"
Q: What is the least number to be added to 1500 to make it a perfect square? 1365 05d1ed93f70b1431921736a7e
5d1ed93f70b1431921736a7e- 121true
- 235false
- 343false
- 469false
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Answer : 1. "21"
Q: If the numerator of a fraction is increased by 20% and the denominator is not changed, the resultant fraction thus obtained is \({2\over3}\). What was the original fraction? 946 05d1edc4ef5eae22172e6f37c
5d1edc4ef5eae22172e6f37c- 1\({3\over8}\)false
- 2\({5\over8}\)false
- 3\({4\over9}\)false
- 4\({5\over9}\)true
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Answer : 4. "\({5\over9}\)"
Q: The difference between a number and its two-fifth is 510. What is 10% of that number? 1144 05d1ee195c068c021a4048e3d
5d1ee195c068c021a4048e3d- 112.75false
- 285true
- 3204false
- 4None of thesefalse
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Answer : 2. "85"
Q: A sum was put at simple interest at a certain rate for 2 years. Had it been put at a 3% higher rate; it would have fetched Rs. 72 more. The sum is: 999 05d1ee80af5eae22172e6f3b4
5d1ee80af5eae22172e6f3b4- 1Rs.1200true
- 2Rs.1500false
- 3Rs. 1600false
- 4Rs. 1800false
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Answer : 1. "Rs.1200"
Q: The most suitable unit for expressing nuclear radius is; 1438 15d1f24b59e6ce62e3f204308
5d1f24b59e6ce62e3f204308- 1Micronfalse
- 2Nanometrefalse
- 3Fermitrue
- 4Angstromfalse
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Answer : 3. "Fermi"
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