DCOA Mixed Practice Test #454

Question 1

If f(x) = 2x + 3, what is f(2)?‌​‍

Accepted Answer

7 — 2(2) + 3 = 4 + 3 = 7. Linear function with slope 2, y-intercept 3.‌​‍

Answer

4

Answer

6

Answer

5

Question 2

The least distance of distinct vision for a normal adult eye is:‌​‍

Accepted Answer

25 cm — Near point of a normal eye is at 25 cm; nearer objects cause strain.‌​‍

Answer

1 m

Answer

10 cm

Answer

50 cm

Question 3

Patriarchy refers to:‌​‍

Accepted Answer

Social system of male dominance over women in power, property, and authority — Patriarchy institutionalises male privilege across economy, politics, family, religion, culture.‌​‍

Answer

Primitive society

Answer

Gender equality

Answer

Matriarchy

Question 4

Mendeleev's periodic table arranged elements by:‌​‍

Accepted Answer

Atomic mass — Mendeleev (1869) used atomic mass; Moseley later switched to atomic number.‌​‍

Answer

Atomic number

Answer

Electronegativity

Answer

Atomic radius

Question 5

Transition metals — general characteristic:‌​‍

Accepted Answer

Variable oxidation states, form coloured compounds, catalytic activity — Partially filled d-orbitals. Paramagnetic (unpaired e). Form complexes, alloys.‌​‍

Answer

Only +1 state

Answer

No complexes

Answer

Non-magnetic

Question 6

The Arthashastra was written by:‌​‍

Accepted Answer

Kautilya (Chanakya) — Arthashastra: comprehensive treatise on statecraft, economy, warfare. ‌​‍Rediscovered 1905 by R. Shamasastry. ‌​‍Compared with Machiavelli's 'The Prince.'

Answer

Panini

Answer

Manu

Answer

Patanjali

Question 7

Which literary form is best suited for summarizing a complex concept through a short, rhythmic verse or rhyme, making it easier for students to recall information?

Accepted Answer

B. Poem — A poem uses rhythmic and rhyming language to condense complex ideas into a memorable format, aiding retention. Essays and reports are prose-based and less rhythmic, while drama relies on performance rather than concise recall.

Answer

A. Essay

Answer

C. Drama

Answer

D. Report

Question 8

Which is the lightest gas?

Accepted Answer

Hydrogen — Hydrogen is the lightest element and the lightest gas. Helium is the second lightest.

Answer

Oxygen

Answer

Nitrogen

Answer

Helium

Question 9

A body moving in a circular path has acceleration directed:‌​‍

Accepted Answer

Towards the centre (centripetal) — Centripetal acceleration = v²/r directed toward centre.‌​‍

Answer

Tangentially

Answer

Away from centre

Answer

Zero

Question 10

India's first semiconductor fabrication plant was announced in:‌​‍

Accepted Answer

Gujarat (Dholera/Sanand) — India's first semiconductor fabs were announced in Gujarat — Tata's fab in Dholera and Micron's ATMP in Sanand.‌​‍

Answer

Hyderabad

Answer

Bengaluru

Answer

Noida

DCOA Mixed Practice Test #454