LDC Mixed Practice Test #457

Question 1

Champions Trophy 2025:‌​‍

Accepted Answer

Hybrid UAE-Pak — Pakistan hosted, India played in UAE.‌​‍

Answer

India

Answer

England

Answer

Cancelled

Question 2

What is the general formula for alkenes?‌​‍

Accepted Answer

CnH2n — One C=C double bond. Alkanes: CnH2n+2. Alkynes: CnH2n-2.‌​‍

Answer

CnH2n-2

Answer

CnH2n+2

Answer

CnHn

Question 3

The National Education Policy (NEP) 2020 places significant emphasis on achieving Foundational Literacy and Numeracy (FLN) for all children. Which specific national initiative was launched to operationalize this goal, especially for children by Grade 3?

Accepted Answer

B. National Initiative for Proficiency in Reading with Understanding and Numeracy (NIPUN Bharat Mission) — The NIPUN Bharat Mission (National Initiative for Proficiency in Reading with Understanding and Numeracy) was launched to ensure that every child achieves foundational literacy and numeracy by the end of Grade 3, as envisioned by NEP 2020. While RUSA and NHEQF pertain to higher education and Samagra Shiksha Abhiyan is a broader school education program, NIPUN Bharat is specifically designed to address the FLN goals.

Answer

A. Rashtriya Uchchatar Shiksha Abhiyan (RUSA)

Answer

C. Samagra Shiksha Abhiyan for secondary education

Answer

D. National Higher Education Qualification Framework (NHEQF)

Question 4

The '@' symbol in email was introduced by:‌​‍

Accepted Answer

Ray Tomlinson — Ray Tomlinson introduced the @ symbol in email addresses in 1971. ‌​‍He is credited with inventing network email.

Answer

Tim Berners-Lee

Answer

Bill Gates

Answer

Larry Page

Question 5

The Rights of Persons with Disabilities (RPwD) Act, 2016, significantly expanded the scope of disability recognition. It increased the number of specified categories of disabilities from 7 (in the PwD Act, 1995) to how many categories?

Accepted Answer

C. 21 — The RPwD Act, 2016, broadened the definition of 'person with disability' by recognizing 21 categories of disabilities, a substantial increase from the 7 specified in the earlier PwD Act, 1995. This expansion ensures that a wider range of individuals receive legal recognition and protection under the Act.

Answer

A. 15

Answer

B. 18

Answer

D. 24

Question 6

Which of the following statements best describes the phenomenon of nuclear fusion as observed in stars like the Sun?

Accepted Answer

B. Fusion requires extremely high temperatures and pressures to overcome electrostatic repulsion between positively charged nuclei — Nuclear fusion in stars like the Sun involves combining light nuclei (e.g., hydrogen isotopes) under extreme temperatures (~15 million K) and pressures to overcome Coulomb repulsion, forming helium and releasing energy. Option A describes fission, C refers to neutron capture (e.g., in stellar nucleosynthesis), and D describes ionization, not energy-releasing fusion.

Answer

A. Fusion occurs when heavy nuclei split into smaller nuclei, releasing energy as per E = mc²

Answer

C. Fusion involves the absorption of neutrons by light nuclei, leading to the formation of heavier elements

Answer

D. Fusion is a process where electrons are stripped from nuclei, creating a plasma state without energy release

Question 7

The 'New World' (Americas) was named 'America' in 1507 by which cartographer, honouring Amerigo Vespucci?‌​‍

Accepted Answer

Martin Waldseemüller — German cartographer Martin Waldseemüller's 1507 world map first labelled the continent 'America'.‌​‍

Answer

Ptolemy

Answer

Gerardus Mercator

Answer

Henricus Martellus

Question 8

Sum of ages of father and son = 60. Father 4× son's age. Son:

Accepted Answer

12 — f+s=60, f=4s. 5s=60. s=12.

Answer

10

Answer

15

Answer

8

Question 9

Caste system is a form of:‌​‍

Accepted Answer

Closed stratification (birth-based) — Caste = closed, ascribed status by birth, endogamy, hereditary occupation, hierarchy based on purity/pollution. ‌​‍Unique to Indian subcontinent.

Answer

Open stratification

Answer

Meritocracy

Answer

Class

Question 10

Antonym of 'adversity':

Accepted Answer

prosperity — Adversity (hardship) ↔ Prosperity (good fortune).

Answer

extremity

Answer

affliction

Answer

distress

LDC Mixed Practice Test #457