Mental Ability and Science Prep
Full explanation, worked examples & memory tricks in the app
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Full explanation, worked examples & memory tricks in the app
Every question in the paper gets a full exam-length answer in the app — organised by marks, the way a topper writes it.
A person walks 10 m towards south, turns left and walks 15 m. Now in which direction is he facing?
East
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CBA ABC ABCD DCBA ABCDE?
EDCBA
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3, 6, 12, 21, ? 48
33
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Choose the alternative which closely resembles the mirror image of the given fig. The figure shows the number 205819.
918205
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Which of the given answer choices would be the water image of the given question figure?
Option 1
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In the following questions, select the missing character form the given alternatives.
10
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0, 2, 6, 12, 20, ?, 42
30
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CE, GI, KM, OQ, ?
SU
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In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following equations? $56 \div 8 + 12 - 72 = ?$
32
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Harihar walks 30 m straight towards south then turns right and walks 25m. Further he turns left and walks 10m. At last he turns his left. What is the direction now he is facing?
North-East
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R, O, L, I, F, ?
C
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1, 49, 121, ?, 289
169
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In a certain code '+' means 'x', '-' means '+', 'x' means '÷' and '÷' means '-'. Then find the value of the following: $72 \times 9 - 14 + 2 = ?$
20
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TMJ, QNL, NON, KPP, ?
HQQ
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2, 6, 14, 26, ?, 62
44
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The set of negative of natural numbers and whole numbers is called as
integers
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Expanded form of 78.059 is
$70 + 8 + \frac{5}{10} + \frac{9}{100}$
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3 tenths 5 thousandths is written as
0.305
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The value of $3 \frac{1}{2} - \left[ 1 \frac{3}{4} + \left\{ 2 \frac{1}{2} - \left( 1 \frac{1}{2} - \frac{1}{3} \right) \right\} \right]$ is
2
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The solution $\frac{3x-1}{5} + \frac{1+x}{2} = 3 - \frac{x-1}{2}$ is
5
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A number of 720 is divided into two parts in the ratio 3 : 2. Find the product of the numbers.
1, 24, 416
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Line has ____ end points
2
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Two sides of an isosceles angle are 5 cm and 6 cm. Then the length of the third side is
5 cm
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In an office the working hours are 10.30 AM to 5.0 PM and in between 30 minutes are spent on lunch. Find the ratio of office hours to the time spend for lunch.
13 : 1
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The greatest negative integer
-1
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Difference of sums of 998 and -486 from 290 and 732
+510
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Product of 78.12 and 1.5 is
117.18
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Ravi had $\frac{5}{6}$ of a cake. He ate $\frac{2}{3}$ of it. What part of the cake did he eat?
$\frac{5}{9}$
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The mean of 6, y, 7, x and 14 is 8. Then
x + y = 13
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The solution of $0.2(2x-1) - 0.5(3x-1) = 0.4$ is
$\frac{1}{11}$
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If two third, one half and one seventh of a number is added to itself, the result is 37. Find the number.
$16 \frac{2}{97}$
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The measure of a straight angle is:
180°
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If the two legs of a right angled triangle are equal and the square of the hypotenuse is 100 then the length of each leg is
10
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In a school the total number of students are 3200 out of which 1800 are boys. Remaining are girls. Ratio of girls to boys is
7 : 9
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The cost price of 25 articles is equal to the SP of 20 articles. Find gain %.
25%
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In $\triangle ABC$, $m\angle BAC = 70^\circ$. Point D line on BC such that $\angle ACD$ become exterior of A ABC. If $m\angle ACD = 120^\circ$ then the value of $\angle ABC$ is ____
50°
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In figure, AB = AC, $\angle B = \angle C$, AB = 8 cm, BE = 6 cm and AE = 3 cm. then find perimeter of $\triangle ADC$.
17 cm
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In $\triangle ABC$. if $2\angle A = 3\angle B = 6\angle C$. then $\angle B = $ ____
30°
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In the word MATHS which of the following pairs of letters shows rotational symmetry
H and S
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A particle starts with a velocity of 5m/s and moves with a uniform acceleration of 2.5 m/s², its velocity after 4 sec is
15 m/s
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Heat is a form of
energy
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Current flows through the circuit when the circuit is in the ____ condition.
Closed
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When an object is heated, it generally:
expands
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Which of the following is an electrical insulator?
Rubber
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Given that $V = 5 + 8t$ (in SI units) the final velocity after 5 sec is
45 m/s
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Materials which offer maximum resistance and do not allow current to flow through them are called
Insulator
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The capacity to do work is called:
energy
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Why is electrical wiring usually covered with a layer of plastic?
To make it safe
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If the distance covered by a particle is zero, what can you say about its displacement?
It must be zero
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The area of the shaded portion in the graph shown below represents:
Distance
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A freely suspended bar magnet rests in
North-south direction
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Which colour is imparted by phenolphthalein in an acidic medium?
Colourless
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Which base is present in window cleaner?
Sodium hydroxide
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When iron pieces are added to a blue colour copper sulphate solution, the colour of copper sulphate changes to
pale green
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What is the chemical formula for acetic acid?
CH₃COOH
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Which type of resource is coal classified as?
non-Renewable
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Where does litmus come from?
Lichens
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The liquids that dissolve in our another are called ____
Miscible
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Which of the following materials is translucent
Stained glass
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What does the neutralisation process produce?
Salt and water
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