Staff Selection Commission Combined Higher Secondary Level Exam
Question : Select the most appropriate ANTONYM of the word given in brackets to fill in the blank.
I can’t believe that you’re ________ (resolute) enough to not even decide what you want for dinner.
Option 1: reluctant
Option 2: indecisive
Option 3: disinclined
Option 4: gullible
Correct Answer: indecisive
Solution : The correct choice is the second option.
Resolute denotes having or showing great determination. Indecisive denotes not providing a definite and clear result. The word indecisive means the opposite of resolute, i.e., doubtful.
The meanings of the other options are as follows:
Question : Jaws are absent in:
Option 1: Birfds
Option 2: Fishes
Option 3: Protochordates
Option 4: Reptiles
Correct Answer: Protochordates
Solution : The Correct Answer is Protochordates
Protochordata and cyclostomata lack jaws. The invertebrate subphylum of the chordata phylum is referred to as protochordata. It contains creatures like tunicates. Cyclostomata are a subclass of group agnatha that lack jaws, girdles, and paired appendages. Hagfish and lampreys are the two types of fish without jaws. Hagfish typically consume dead or dying fish as food.
Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bracketed part of the sentence. In case no improvement is needed, select "No Improvement".
I went to sleep last night, (almost as soon as) my head hit the pillow.
(1) no sooner then
(2) as quickly as
(3) almost as quickly as
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (4)
Solution : The fourth option is the correct answer: No improvement.
This is because ''almost as soon as'' which means 'almost immediately' is used in the correct context here indicating that the speaker fell asleep immediately after laying their head on the pillow.
Question : If in a $\triangle ABC$, as drawn in the figure, $AB = AC$ and $\angle ACD = 120^{\circ}$, then angle A is equal to:
Option 1: $50^{\circ}$
Option 2: $60^{\circ}$
Option 3: $70^{\circ}$
Option 4: $80^{\circ}$
Correct Answer: $60^{\circ}$
Solution : Given that $AB = AC$ in $\triangle ABC$. This is an isosceles triangle, such that $\angle BAC = \angle ABC$. We have, $\angle ACD = 120^\circ$ $\therefore \angle ACB = 180^\circ - 120^\circ = 60^\circ$ Since the sum of angles in a triangle is $180^\circ$. ⇒ $\angle BAC + \angle ABC + \angle ACB = 180^\circ$ ⇒ $2\angle BAC + 60^\circ = 180^\circ$ $\therefore\angle BAC = \frac{180^\circ - 60^\circ}{2} = 60^\circ$ Hence, the correct answer is $60^\circ$.
Question : ABCD is a cyclic quadrilateral, AB is the diameter of the circle. If angle $\angle ACD=45^{\circ}$, then what is the value of $\angle BAD$?
Option 1: $90^{\circ}$
Option 2: $45^{\circ}$
Option 3: $135^{\circ}$
Option 4: $35^{\circ}$
Correct Answer: $45^{\circ}$
Solution :
Since, an angle subtended by the diameter of a circle at the circumference = $90^{\circ}$ ⇒ $\angle$ ACB = $90^{\circ}$ $\angle$ BCD = $\angle$ ACD + $\angle$ ACB = $45^{\circ} + 90^{\circ}=135^{\circ}$ Since the opposite angles of a cyclic quadrilateral are supplementary, $\angle$ BCD + $\angle$ BAD = $180^{\circ}$ $\therefore \angle$ BAD = $180^{\circ} - 135^{\circ}=45^{\circ}$ Hence, the correct answer is $45^{\circ}$.
Question : 2nd October is observed as________.
Option 1: International Non-Violence Day
Option 2: World Social Justice Day
Option 3: World Wildlife Day
Option 4: International Education Day
Correct Answer: International Non-Violence Day
Solution : The correct answer is International Non-Violence Day.
October 2nd is indeed observed as the International Day of Non-Violence. This date is significant because it marks the birthday of Mahatma Gandhi, the leader of the Indian independence movement against British colonial rule and a pioneer of non-violent resistance, known as "Satyagraha."
Question : Direct conversion of solar energy with the use of a photo voltaic cell results in the production of
Option 1: Optical energy
Option 2: Electrical energy
Option 3: Thermal energy
Option 4: Mechanial energy
Correct Answer: Electrical energy
Solution : The correct option is electrical energy.
The photovoltaic effect is a mechanism used by photovoltaic cells, also referred to as solar cells, to transform light energy from the sun directly into electrical energy. When photons, the light particles hit a solar cell's surface, their energy is transferred to the material's electrons, causing this effect. These electrons get activated by the energy of the photons, which causes them to flow as an electric current. The generated current can then be harnessed and used to power electrical equipment, or it can be stored in batteries for later use.
Question : Study the given pie chart and answer the question that follows.
The pie chart represents the marks (out of 100) obtained by Shweta in different subjects - Hindi, English, Maths, Science, Social Science (S.S.) and Commerce in her class examination. The marks obtained in English and S.S. are what percent less than the marks obtained in Hindi and Maths?
The marks obtained in English and S.S. are what percent less than the marks obtained in Hindi and Maths?
Option 1: $30 \frac{1}{8} \%$
Option 2: $31 \frac{5}{8} \%$
Option 3: $30 \frac{5}{8} \%$
Option 4: $31 \frac{1}{8} \%$
Correct Answer: $30 \frac{5}{8} \%$
Solution : Share of marks obtained in English = $52^{\circ}$ Share of marks obtained in S.S. = $59^{\circ}$ Share of total marks obtained in English and S.S = $52^{\circ}$+$59^{\circ}$ = $111^{\circ}$------------(i) Share of marks obtained in Hindi = $72^{\circ}$ Share of marks obtained in Maths = $88^{\circ}$ Share of total marks obtained in Hindi and Maths = $160^{\circ}$ -----------(ii) Difference in share of marks = $160^{\circ}$–$111^{\circ}$ = $49^{\circ}$ Marks obtained in English and S.S. are less than marks obtained in Hindi and Maths by: = $\frac{49}{160}×100$ = $30\frac{5}{8}$% Hence, the correct answer is $30\frac{5}{8}$%.
Question : In triangle MNO, AB is parallel NO and MA = 2.5, AN = 7.5, MB = 2.2, find the value of BO.
Option 1: 6.6
Option 2: 8.2
Option 3: 5.4
Option 4: 4.8
Correct Answer: 6.6
Solution : Given: In triangle MNO, AB is parallel NO and MA = 2.5, AN = 7.5, MB = 2.2 Here, triangles MNO and MAB are similar because angle M in triangle MNO is equal to angle M in triangle MAB. So, $\frac{MA}{MN}=\frac{MB}{MO}$ ⇒ $\frac{2.5}{2.5+7.5}=\frac{2.2}{MO}$ $\therefore MO=8.8$ BO = MO – MB = 8.8 – 2.2 = 6.6 Hence, the correct answer is 6.6.
Question : The data given in the table shows the number of boys and girls enrolled for different games in an academy over 5 years.
Which game has the maximum enrollment and during which year?
Option 1: Cricket in 2020
Option 2: Basketball in 2019
Option 3: Football in 2019
Option 4: Basketball in 2020
Correct Answer: Basketball in 2020
Solution : In 2018, Basketball: 46 + 34 = 80 Football: 42 + 37 = 79 Cricket: 45 + 35 = 80 In 2019, Basketball: 40 + 41 = 81 Football: 44 + 38 = 82 Cricket: 42 + 32 = 74 In 2020, Basketball: 43 + 40 = 83 Football: 40 + 32 = 72 Cricket: 44 + 38 = 82 In 2021, Basketball: 37 + 44 = 81 Football: 43 + 25 = 68 Cricket: 34 + 28 = 62 In 2022, Basketball: 34 + 41 = 75 Football: 41 + 32 = 73 Cricket: 41 + 39 = 80 It can be seen that in the year 2020, Basketball has the maximum enrollment. Hence, the correct answer is Basketball in 2020.
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