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Question : Which actinide, discovered by Glenn T. Seaborg in 1940, is used as a heat source for sensitive electrical components in satellites as well as a power source for satellites?
Option 1: Curium
Option 2: Plutonium
Option 3: Nobelium
Option 4: Americium
Correct Answer: Plutonium
Solution : The correct option is Plutonium.
Plutonium-238, an Actinide discovered by Glenn T. Seaborg in 1940, is utilised as both a power source and a heat source for delicate electrical components in spacecraft. With thermoelectric generators, the heat generated during the radioactive breakdown of Pu-238 can
Question : Directions: Which figure will replace the question mark (?) in the following figure series?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : According to the given figures – 1. An arrow is increasing in the clockwise and anti-clockwise directions alternately. 2. The direction of the arrows in the clockwise and anti-clockwise directions alternately.
So, following the above pattern, the required figure will be as follows –
Hence, the
Question : Directions: Select the related letter cluster from the given alternatives. HAPPY : ibqqz :: FRESH : ?
Option 1: gsfti
Option 2: gsdti
Option 3: gsftj
Option 4: esftg
Correct Answer: gsfti
Solution : Given: HAPPY : ibqqz :: FRESH : ?
Add 1 to the place value of each letter of HAPPY to obtain the required code – H + 1 = i; A + 1 = b; P + 1 = q; P + 1 = q;
Question : The centroid of a $\triangle ABC$ is G. The area of $\triangle ABC$ is 60 cm2. The area of $\triangle GBC$ is:
Option 1: 10 cm2
Option 2: 30 cm2
Option 3: 40 cm2
Option 4: 20 cm2
Correct Answer: 20 cm2
Solution : The area of triangle GBC is one-third of the area of $\triangle ABC$. Given that the area of $\triangle ABC$ is 60 cm2. The area of $\triangle GBC=\frac{1}{3} \times 60 = 20$ cm2 Hence, the correct answer is 20 cm
Question : Directions: Select one of the option figures that is embedded in the given figure (rotation is NOT allowed).
Solution : The embedded figure will have the same orientation as the main figure. Only the third option figure is embedded in the given figure.
Hence, the third option is correct.
Question : What is the value of $\frac{11 \times 11-24 \times 6 ~of~ 2+12 \times 12}{4 \times 5+6 \times 2 \div 4}$ ?
Option 1: 1
Option 2: –1
Option 3: 2
Option 4: –2
Correct Answer: –1
Solution : $\frac{11 \times 11-24 \times 6 ~of~ 2+12 \times 12}{4 \times 5+6 \times 2 \div 4}$ = $\frac{121-24 \times 6 ~of~ 2+12 \times 12}{4 \times 5+6 \times 2 \div 4}$ = $\frac{121-24×12+12 \times 12}{4 \times 5+6 \times 2 \div 4}$ = $\frac{121-288+144}{4 \times 5+6 \times 2
Question : Directions: Select the figure that will come next in the following series.
Solution : Here, the pattern is as follows – 1. In each figure, the circle is rotating by 90° and also moving corner by corner in an anti-clockwise direction. 2. In each figure the arrow mark figure is rotating by 90° in a clockwise direction and moving side
Question : Select the most appropriate option that can substitute the underlined segment in the given sentence.
Abhijeet feels extremely tired after working all day long.
Option 1: depressed
Option 2: exhausted
Option 3: sleepy
Option 4: bare
Correct Answer: exhausted
Solution : The correct choice is the second option.
Exhausted is the word that describes someone who feels extremely tired after a long day of work, as it directly conveys the idea of physical fatigue and weariness.
The meanings of the other options are as follows:
Question : In the given figure, chords XY and PQ intersect each other at point L. Find the length of XY (in cm).
Option 1: 21
Option 2: 20
Option 3: 22
Option 4: 23
Correct Answer: 22
Solution : Given: PQ = 10 cm, QL = 5 cm, YL = 3 cm, and LX = (x + 3) cm. LQ × LP = LY × LX Placing the values in the above formula, 5 × 15 = 3 × (x + 3) ⇒ 75
Question : At what point does the line $3x+y=-6$ intercept the x-axis?
Option 1: (2, 0)
Option 2: (–2, 0)
Option 3: (0, –6)
Option 4: (0, 6)
Correct Answer: (–2, 0)
Solution : At an x-intercept, y = 0. So, 3x + 0 = – 6 Solving for x, ⇒ 3x = – 6 ⇒ x = – 2 So, the required intercept point = (–2, 0) Hence, the correct answer is (–2, 0).
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