LDC Mixed Practice Test #281

Question 1

12.5 + 12.3 minus you (12.5 ÷ 12.3) ratio (a:b form):‌​‍

Accepted Answer

5:8 — OCR garbled; answer per standard key 5:8.‌​‍

Answer

8:1

Answer

8:5

Answer

11:8

Question 2

Electronic configuration of Cr (Z=24):‌​‍

Accepted Answer

[Ar] 3d⁵ 4s¹ — Half-filled d (3d⁵) is extra-stable. ‌​‍Cu similarly [Ar] 3d¹⁰ 4s¹ — exception to aufbau.

Answer

[Ar] 3d⁶

Answer

[Ar] 3d⁴ 4s²

Answer

[Ar] 4s² 4p⁴

Question 3

If BOOK = DQQM, PEN =?‌​‍

Accepted Answer

RGP — Each letter +2. P→R, E→G, N→P = RGP.‌​‍

Answer

QFO

Answer

RGR

Answer

SGP

Question 4

During the process of respiration, where does the primary exchange of oxygen from the inhaled air into the blood, and carbon dioxide from the blood into the air, occur?

Accepted Answer

C. Alveoli — The alveoli are tiny air sacs in the lungs with very thin walls and a rich capillary network, making them the ideal site for efficient gas exchange between the air and the blood. The trachea, bronchi, and pharynx are part of the conducting airways, primarily involved in air transport.

Answer

A. Trachea

Answer

B. Bronchi

Answer

D. Pharynx

Question 5

In CCE, which assessment type helps teachers identify the learning progress of students with diverse abilities in an inclusive classroom?

Accepted Answer

C. Flexible rubrics and varied assessment methods. — CCE emphasizes inclusive assessment by using flexible rubrics and varied methods (C) to accommodate diverse learning needs. Standardized tests (A) may not cater to individual differences, peer evaluations (B) are not reliable, and parent-teacher meetings (D) are not assessment tools.

Answer

A. Standardized tests administered uniformly to all students.

Answer

B. Peer evaluations conducted by high-achieving students.

Answer

D. Annual parent-teacher meetings.

Question 6

The English philosopher whose 'Two Treatises of Government' rejected the divine right of kings was:‌​‍

Accepted Answer

John Locke — John Locke (1689) grounded government in consent of the governed.‌​‍

Answer

David Hume

Answer

Francis Bacon

Answer

Thomas Hobbes

Question 7

The demonetisation of ₹500 and ₹1000 notes was announced on:‌​‍

Accepted Answer

8 November 2016 — PM Modi announced demonetisation on 8 November 2016 at 8 PM, effective midnight. ‌​‍Affected ~86% of currency in circulation.

Answer

1 July 2017

Answer

8 November 2017

Answer

15 November 2016

Question 8

Cricket World Cup 2023 was held in:‌​‍

Accepted Answer

India — India hosted the 2023 Cricket World Cup. Australia won the final against India.‌​‍

Answer

England

Answer

Australia

Answer

South Africa

Question 9

EWS 10% reservation upheld by SC (2022):‌​‍

Accepted Answer

3-2 majority — 3-2 majority in Janhit Abhiyan.‌​‍

Answer

7-0

Answer

5-0

Answer

Full bench

Question 10

What does the Fundamental Theorem of Algebra state?‌​‍

Accepted Answer

Every nth degree polynomial has exactly n complex roots (with multiplicity) — Proved by Gauss. Complex roots of real polynomials come in conjugate pairs.‌​‍

Answer

Only even degree roots

Answer

Every polynomial has real root

Answer

Only real

LDC Mixed Practice Test #281