LGS Mixed Practice Test #658

Question 1

A key principle of action research in the classroom emphasizes that the teacher is primarily:

Accepted Answer

B. A reflective practitioner who systematically investigates and improves their own practice. — Action research empowers teachers to be active agents of change within their own classrooms. The teacher is not merely a consumer of others' research (A) or an administrator (C), nor solely a data collector for external parties (D). Instead, they are the primary researcher, engaging in a continuous cycle of inquiry, action, and reflection to enhance their teaching and student learning.

Answer

A. A passive recipient of research findings from educational experts.

Answer

C. An administrative authority who dictates research topics to subordinates.

Answer

D. A data entry clerk responsible for compiling quantitative statistics for external analysis.

Question 2

A batch of parenteral solution causes a febrile reaction in patients. Which substance is the most likely culprit, and what process is specifically designed to remove or inactivate it from water for injection?

Accepted Answer

A. Endotoxins; distillation. — Febrile reactions (fever) following parenteral administration are most commonly caused by pyrogens, primarily bacterial endotoxins. Distillation is an effective method for producing pyrogen-free water for injection because pyrogens are non-volatile and remain in the boiling flask while water vapor is collected. Particulate matter (B) can cause embolisms, microbial contaminants (C) can cause infections (though endotoxins are from dead microbes), and heavy metals (D) cause toxicity, but endotoxins are specifically linked to febrile reactions.

Answer

B. Particulate matter; membrane filtration.

Answer

C. Microbial contaminants; autoclaving.

Answer

D. Heavy metals; ion exchange.

Question 3

Rh incompatibility in pregnancy occurs when:

Accepted Answer

Mother Rh−, baby Rh+ — Rh-negative mother may produce anti-Rh antibodies against Rh-positive fetus in subsequent pregnancies.

Answer

Mother Rh+, baby Rh−

Answer

Both Rh+

Answer

Both Rh−

Question 4

The Travancore army defeated the Dutch at Colachal in:

Accepted Answer

1741 — Battle of Colachal (31 July 1741) — Marthanda Varma's historic victory over the Dutch VOC.

Answer

1721

Answer

1761

Answer

1792

Question 5

Merryland Studios:

Accepted Answer

TVM — TVM — Subramanyam Studios.

Answer

Alappuzha

Answer

Ernakulam

Answer

Thrissur

Question 6

Which of the following represents the nth term of a Geometric Progression (GP)?‌​‍

Accepted Answer

a · r^(n-1) — Geometric progression. ‌​‍Sum of n terms: a(rⁿ - 1)/(r-1). Infinite sum if |r|<1: a/(1-r).

Answer

a/r

Answer

a + (n-1)d

Answer

n·a

Question 7

Kerala Calendar year starts (Chingam):‌​‍

Accepted Answer

August-September — Chingam 1 = around mid-August.‌​‍

Answer

January

Answer

April

Answer

October

Question 8

New CEC 2025:‌​‍

Accepted Answer

Gyanesh Kumar — Gyanesh Kumar from Feb 2025.‌​‍

Answer

Rajiv Kumar

Answer

Anup Chandra

Answer

Sanjay Mishra

Question 9

Which type of rock is formed by cooling and solidification of magma?‌​‍

Accepted Answer

Igneous — Igneous rocks = solidified magma/lava. Examples: granite, basalt.‌​‍

Answer

Fossil

Answer

Metamorphic

Answer

Sedimentary

Question 10

Fish production in Kerala mainly comes from:‌​‍

Accepted Answer

Both marine and freshwater — Kerala has significant marine (Arabian Sea coast) and freshwater (backwaters, rivers) fish production.‌​‍

Answer

Freshwater only

Answer

Marine only

Answer

Imported

LGS Mixed Practice Test #658