GATE Metallurgical Engineering General Aptitude Flashcards

24 sample cards from the General Aptitude deck

Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.

1. What is an idiom? Give one example with its meaning.

   An idiom is a fixed expression whose meaning cannot be deduced from the literal meanings of its words. Example: 'kick the bucket' means 'to die'; 'piece of cake' means 'very easy'.

2. What does the idiom 'once in a blue moon' mean?

   It means very rarely or almost never.

3. What does the idiom 'bite the bullet' mean?

   To face a difficult or unpleasant situation with courage and endure it.

4. What is the difference between an idiom and a phrase?

   A phrase is any small group of related words that functions as a unit but lacks a subject-verb pair; an idiom is a specific type of phrase whose figurative meaning differs from its literal words.

5. In reading comprehension, what is the difference between the 'main idea' and a 'supporting detail'?

   The main idea is the central point or message the author conveys; supporting details are the facts, examples, and reasons that explain or back up the main idea.

6. What is the difference between 'inference' and a directly stated fact in comprehension?

   A directly stated fact is written explicitly in the text; an inference is a conclusion the reader draws by combining textual clues with reasoning, not stated outright.

7. What is 'tone' in a reading passage?

   Tone is the author's attitude toward the subject or audience, conveyed through word choice and style (e.g., formal, sarcastic, optimistic, critical).

8. What is narrative sequencing in verbal reasoning questions?

   It is arranging a set of jumbled sentences or events into a logical, coherent order so the passage reads as a meaningful, connected narrative.

9. What textual clues help determine the correct order in narrative sequencing?

   Pronoun references, connectives/transition words (however, then, finally), chronological markers, articles (a vs the indicating first vs later mention), and cause-effect links.

10. What is data interpretation as an aptitude skill?

    Data interpretation is the ability to read, analyze, and draw conclusions from data presented in tables, graphs, or charts, often involving calculations like percentages, ratios, and averages.

11. What is a bar graph best used for representing?

    A bar graph uses rectangular bars of lengths proportional to values to compare discrete categories or to show changes in a quantity across categories or over time.

12. What does a pie chart represent, and how is each slice's angle calculated?

    A pie chart shows parts of a whole as proportional sectors of a circle. Each slice's central angle is $\text{angle} = \frac{\text{component value}}{\text{total}} \times 360^{\circ}$.

13. In a pie chart, what central angle corresponds to a component that is 25% of the total?

    $0.25 \times 360^{\circ} = 90^{\circ}$.

14. What type of graph is best for showing a continuous trend over time?

    A line graph, which plots data points connected by line segments and is ideal for showing trends and changes in a variable over a continuous interval such as time.

15. What is a histogram, and how does it differ from a bar graph?

    A histogram displays the frequency distribution of continuous/grouped numerical data using adjacent bars with no gaps. A bar graph compares discrete categories and has gaps between bars.

16. How do you calculate percentage change between an old value and a new value?

    $\text{Percentage change} = \frac{\text{New value} - \text{Old value}}{\text{Old value}} \times 100\%$. A positive result is an increase; negative is a decrease.

17. How is the arithmetic mean (average) of a data set computed?

    $\text{Mean} = \frac{\text{sum of all values}}{\text{number of values}} = \frac{1}{n}\sum_{i=1}^{n} x_{i}$.

18. In data interpretation, how do you express one quantity as a ratio of another?

    Divide the first quantity by the second and simplify. For quantities $a$ and $b$, the ratio is $a:b$ or $\frac{a}{b}$, reduced to lowest terms.

19. What does a scatter plot (2-dimensional plot) show?

    A scatter plot displays paired values as points on an $x$-$y$ plane, revealing the relationship, correlation, or pattern between two variables.

20. What is the difference between a 2-dimensional and a 3-dimensional plot?

    A 2D plot represents data with two axes (e.g., $x$ and $y$), showing the relation between two variables; a 3D plot adds a third axis ($z$) to display the relationship among three variables or a surface.

21. In a data table, what do rows and columns typically represent?

    Rows and columns organize data into a grid: typically each row is a record or category and each column is a variable or attribute, with their intersection giving a specific data value.

22. On a map, what is a 'scale' and what does it tell you?

    A map scale is the ratio between a distance on the map and the corresponding actual distance on the ground (e.g., $1:100000$), letting you convert measured map distances into real distances.

23. If a map scale is $1:50000$, what real distance does $3\text{ cm}$ on the map represent?

    $3 \times 50000 = 150000\text{ cm} = 1.5\text{ km}$.

24. When comparing two data graphs, what is the key first step before drawing conclusions?

    Read and align the axes, units, scales, and legends of both graphs to ensure you are comparing equivalent quantities, since different scales or units can distort apparent differences.

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