RRB NTPC Mock Test 5

Test Preparation on RRB NTPC Mock Test 5

1.

If the point A (7, k) is the vertex of an isosceles triangle ABC with base BC,where B = (2, 4) and C = (6, 10), then what is 'k'?

16
23
34
45

2.

If the distance between the points (na, nb) and (a, b) is 4 times the distance between the points (5a, 5b) and (a, b), then 'n' is equal to

111 or -13
211
313
417 or -15

3.

ABC is a tringle whose centroid is G. If A is (-3, 1) B is (2, b), C is (a, -4) and

1is (1, -1) then find 'a' and 'b'.
2a = 4, b = 0
3a = 0, b = 4
4a = 3, b = 2

4.

An angle is equal to 3π /5 radians. What is its measure in degrees?

1145
272
3108
4120

5.

Find the range of values of x, which satisfy the inequality - 1/5<3x/10+1<2/5, x ? R

1(x : x ? R, 0.3 ?x 9)
2(x : x ? R, -4 ?x -2)
3(x : x ? R, 4 ?x -2)
4(x : x ? R, 5 x ?8)

6.

Read the law given below and identify the same:The mass on any substance liberated from an electrolyte is directly proportionalto the quantity of charge passing through the solution.

1Avogadro's law
2Faraday's first law of electrolysis
3Faraday's second law of electrolysis
4Kirchhaoff's law of electricity

7.

The value of Avogadro's constant is-

16.022 * 1023 per mole
258.04 * 10-2 per mole
369.51 * 10-18 per mole
46.022 * 1014 per mole

8.

In an experiment, 295 mg of copper is deposited when a current of 500 mA passes for 30 minutes. Find the electrochemical equivalent of copper-

132.77 a 10-8 kg/ coulomb
258.4 kg/ coulomb
3109.5* 10-8 kg/ coulomb
41/ 32.77 * 10-8 kg/ coulomb

9.

Which one of the following is the correct unit of angular velocity?

1m/ minute
2cm/ sec2
3cm/sec
4radians/ sec

10.

The force by which a body is attracted towards the centre of the earth is called-

1Gravitational force
2Mass
3Momentum
4Impulsive force

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