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Question : Select the most appropriate word for the given group of words.
The branch of physics concerned with the properties of sound
Option 1: Acoustics
Option 2: Anchor
Option 3: Anarchist
Option 4: Apiary
Correct Answer: Acoustics
Solution : The first option is the correct choice.
Acoustics is a branch of physics concerned with the properties of sound. It specifically deals with the study of sound, its production, transmission, and effects.
The meanings of the other options are as follows:
Question : Direction: In the following question, two statements are given followed by two conclusions I and II. You have to consider the two statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements.
Statements
All women are cats.
All cats are rats.
Conclusions
I. All women are rats.
II. All rats are women.
Option 1: Neither conclusion I nor II follows
Option 2: Only conclusion I follows
Option 3: Only conclusion II follows
Option 4: Both conclusions I and II follow
Correct Answer: Only conclusion I follows
Solution : Given:
Let's use a Venn diagram to evaluate each conclusion:
I. All women are rats
Since all women are cats and all cats are rats, this implies that all women are cats. So,
Question : Directions: Three statements are given followed by three conclusions numbered I, II, and III.Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: Some apples are fruits. All fruits are vegetables. No vegetable is healthy. Conclusions: I. No apple is healthy. II. No healthy is vegetable. III. Some vegetables are apples.
Option 1: Only conclusions I and II follow
Option 2: Only conclusions I and III follow
Option 3: All conclusions follow
Option 4: Only conclusions II and III follow
Correct Answer: Only conclusions II and III follow
Solution : The possible Venn diagram according to the given statements is as follows –
Let's analyse the conclusions – Conclusion (I): No apple is healthy – From the Venn diagram, it is evident that there is no direct relation between apples
Question : Which of the following is not a feature of National Income?
Option 1: It is a macroeconomic concept.
Option 2: It is a flow concept.
Option 3: It is always expressed regarding the particular financial year.
Option 4: It is included only in intermediate goods.
Correct Answer: It is included only in intermediate goods.
Solution : The correct answer is It is included only in intermediate goods.
National income includes the total value of all goods and services produced within a country's borders, regardless of whether they are intermediate or final goods. It comprises
Question : Directions: A paper is folded and cut as shown below. How will it appear when unfolded?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : When the folded paper is unfolded, it will look like –
Hence, the first option is correct.
Question : Who authored the book "Modi's Midas Touch in Foreign Policy"?
Option 1: Surendra Kumar
Option 2: Sunita Narain
Option 3: P. S. Negi
Option 4: Anuj Dhar
Correct Answer: Surendra Kumar
Solution : The correct option is Surendra Kumar.
Surendra Kumar, a former ambassador, wrote the book "Modi's Midas Touch in Foreign Policy". The book describes how far India has come and how the Hon. Prime Minister has left his indelible mark on the country's foreign policy
Question : Directions: Select the figure that will replace the question mark (?) in the following figure series.
Solution : According to the given question figure, the pattern is as follows –
Hence, the third option is correct.
Question : Directions: The overall rainfall in certain regions of India decreases year after year. Find out from the data the trend in decrease.
Option 1: 6 mm
Option 2: 7 mm
Option 3: 5 mm
Option 4: 8 mm
Correct Answer: 5 mm
Solution : Given: The rainfalls are 26, 25, 23, 20, 16, 11, ?
Here, subtract the consecutive natural numbers from each term to get the next term. 26 – 1 = 25; 25 – 2 = 23; 23 – 3 = 20; 20 – 4 =
Question : Which of the following relations is correct for $0< \theta < 90^{\circ}$?
Option 1: $\sin \theta = \sin^{2}\theta$
Option 2: $\sin \theta < \sin^{2} \theta$
Option 3: $\sin \theta > \sin^{2}\theta$
Option 4: $\sin \theta > \operatorname{cosec}^{2}\theta$
Correct Answer: $\sin \theta > \sin^{2}\theta$
Solution : For $(0 < \theta < 90^{\circ})$, the correct relation is: $\sin\theta > \sin^{2}\theta$ Here's why: ⇒ \(\sin^{2}\theta\) is the square of \(\sin\theta\) and since \(\sin\theta\) is less than 1 for \(0 < \theta < 90^0\), \(\sin^{2}\theta\) will be less than \(\sin\theta\). ⇒
Question : The average mark obtained by 120 students in an examination is 50. If the average mark of passed students is 70 and the average mark of the failed students is 30, then what is the number of students who passed the examination?
Option 1: 100
Option 2: 60
Option 3: 80
Option 4: 40
Correct Answer: 60
Solution : Given, Average marks of 120 students = 50 Average marks of passed students = 70 Average marks of failed students = 30 We know, Total marks = Number of students $\times$ Average marks ⇒ Total marks of 120 students = 120$\times$50 = 6000 Let the
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