LDC Mixed Practice Test #874

Question 1

The COVID-19 national lockdown in India began on:‌​‍

Accepted Answer

24 March 2020 — Janata Curfew on 22 March, then 21-day national lockdown announced by PM Modi from 25 March 2020 (midnight of 24 March).‌​‍

Answer

1 April 2020

Answer

22 March 2020

Answer

14 March 2020

Question 2

Velu Thampi Dalawa revolted:‌​‍

Accepted Answer

1809 — 1808-09 against British.‌​‍

Answer

1857

Answer

1947

Answer

1891

Question 3

A teacher conducts a short quiz at the end of each chapter and uses the results to identify areas where students are struggling, then adjusts her teaching methods for the next class. This approach is an example of which type of assessment?

Accepted Answer

B. Formative Assessment — Formative assessment is designed to monitor student learning during instruction and provide ongoing feedback to both students and teachers. In this scenario, the quiz helps the teacher identify learning gaps and adjust teaching, which is a key characteristic of formative assessment. Summative assessment evaluates learning at the end of an instructional unit, while diagnostic assessment identifies learning difficulties before instruction begins.

Answer

A. Summative Assessment

Answer

C. Diagnostic Assessment

Answer

D. Norm-referenced Assessment

Question 4

Deepest lake world:‌​‍

Accepted Answer

Baikal — Baikal (1,642m).‌​‍

Answer

Superior

Answer

Caspian

Answer

Tanganyika

Question 5

Which of the following is NOT a primary advantage of using multimedia teaching aids in a classroom?

Accepted Answer

C. Reduces the workload of teachers by automating lesson planning — Multimedia teaching aids improve engagement and support varied learning styles, but they do not automate or reduce the core workload of lesson planning. The correct answer highlights that such tools assist rather than replace pedagogical work.

Answer

A. Enhances student engagement through visual and auditory stimulation

Answer

B. Facilitates differentiated learning by catering to diverse learning styles

Answer

D. Supports experiential learning through interactive simulations

Question 6

Reserpine, an indole alkaloid isolated from Rauwolfia serpentina, exerts its pharmacological effect primarily by:

Accepted Answer

C. Depleting catecholamine and serotonin stores in presynaptic neurons. — Reserpine acts by irreversibly binding to the vesicular monoamine transporter (VMAT), preventing the uptake and storage of neurotransmitters like norepinephrine, dopamine, and serotonin into synaptic vesicles. This depletion of neurotransmitter stores leads to its antihypertensive and sedative effects.

Answer

A. Directly stimulating adrenergic receptors, leading to vasoconstriction.

Answer

B. Inhibiting the reuptake of norepinephrine, serotonin, and dopamine.

Answer

D. Acting as a competitive antagonist at muscarinic acetylcholine receptors.

Question 7

The Kochi-Muziris Biennale is India's largest:‌​‍

Accepted Answer

Contemporary art exhibition — The Kochi-Muziris Biennale, held every two years since 2012, is India's largest contemporary art exhibition.‌​‍

Answer

Music festival

Answer

Film festival

Answer

Literary festival

Question 8

Which of the following polymers is synthesized through an addition polymerization process and is used extensively in the manufacture of non-stick cookware coatings?

Accepted Answer

B. Polytetrafluoroethylene (PTFE) — Polytetrafluoroethylene (PTFE) is produced via addition polymerization of tetrafluoroethylene monomers and is renowned for its non-stick properties due to the strong carbon-fluorine bonds. PET is a condensation polymer, PVC and polycarbonate are used in different applications not primarily for non-stick coatings.

Answer

A. Polyethylene terephthalate (PET)

Answer

C. Polyvinyl chloride (PVC)

Answer

D. Polycarbonate (PC)

Question 9

Which of the following is a common emotional challenge during adolescence that may interfere with academic performance?

Accepted Answer

C. Impulsivity and emotional dysregulation — Adolescents often exhibit impulsivity and emotional dysregulation (C) due to ongoing brain development, particularly in the prefrontal cortex. While emotional regulation (A) and impulse control (D) improve with age, they are not yet fully developed, and risk-taking (B) may persist but is not the primary emotional challenge.

Answer

A. Increased emotional regulation

Answer

B. Reduced risk-taking behaviors

Answer

D. Enhanced impulse control

Question 10

Elon Musk role 2024-25:‌​‍

Accepted Answer

DOGE, Trump admin — Department of Government Efficiency.‌​‍

Answer

Neutral

Answer

Biden

Answer

Opposing

LDC Mixed Practice Test #874