LGS Mixed Practice Test #174

Question 1

Paradesi Synagogue in Cochin built:‌​‍

Accepted Answer

1568 — 1568 — oldest active synagogue in the Commonwealth.‌​‍

Answer

1500

Answer

1600

Answer

1650

Question 2

A scientist is designing a radiation detector to specifically identify alpha particles emitted from a radioactive source, while minimizing interference from beta and gamma radiation. Which of the following detector characteristics would be most effective for this purpose?

Accepted Answer

B. A very thin window or no window, and a short detection path within the detector. — Alpha particles have very low penetrating power and a short range in matter. Therefore, a detector with a very thin window or no window allows them to enter, and a short detection path is sufficient to capture their energy before they are fully absorbed, effectively distinguishing them from more penetrating beta and gamma radiation. Thick lead shielding is primarily for gamma rays, liquid scintillators are general-purpose but less specific for alpha due to range, and a magnetic field deflects both alpha and beta particles without selective identification based on entry alone.

Answer

A. A thick lead shielding around the detector.

Answer

C. A high-density liquid scintillator.

Answer

D. A strong magnetic field across the detection area.

Question 3

Cognitive dissonance theory:‌​‍

Accepted Answer

Discomfort from holding contradictory cognitions → motivation to reduce (Festinger) — Leon Festinger (1957). ‌​‍We change attitudes or behaviors to reduce dissonance. Explains post-decisional rationalisation.

Answer

Stable

Answer

Only emotion

Answer

Agreement

Question 4

Polymer used in non-stick coating:‌​‍

Accepted Answer

Teflon (PTFE) — Teflon (Polytetrafluoroethylene) — non-stick, heat resistant.‌​‍

Answer

Polythene

Answer

Nylon

Answer

PVC

Question 5

Gukesh Dommaraju became FIDE World Chess Champion 2024 by defeating:‌​‍

Accepted Answer

Ding Liren — Gukesh beat reigning champion Ding Liren in Singapore (Dec 2024), becoming the youngest World Champion at 18.‌​‍

Answer

Garry Kasparov

Answer

Hikaru Nakamura

Answer

Magnus Carlsen

Question 6

A 10-month-old infant with diarrhea for 2 days shows restlessness, sunken eyes, and drinks eagerly. According to IMNCI guidelines, how would you classify the dehydration status of this infant?

Accepted Answer

A. Some Dehydration — According to IMNCI guidelines, restlessness or irritability, sunken eyes, and drinking eagerly are key signs indicating 'Some Dehydration'. Severe dehydration would include signs like lethargy or unconsciousness and not being able to drink. No dehydration would present with no signs of dehydration.

Answer

B. Severe Dehydration

Answer

C. No Dehydration

Answer

D. Impending Shock

Question 7

Vinegar is acidic because of the presence of:‌​‍

Accepted Answer

acetic acid — Vinegar contains 4–8% acetic acid (CH₃COOH).‌​‍

Answer

hydrochloric acid

Answer

tartaric acid

Answer

citric acid

Question 8

KITE (Kerala Infrastructure and Technology for Education) plays a crucial role in implementing the 'Hi-Tech School Project' in Kerala. Which of the following best describes the primary objective of this project?

Accepted Answer

C. To equip all public school classrooms with IT infrastructure, including laptops, projectors, and broadband internet, to facilitate smart learning. — The 'Hi-Tech School Project', spearheaded by KITE, is designed to transform public school classrooms into modern learning environments by providing essential IT infrastructure like laptops, projectors, and robust internet connectivity. This initiative aims to foster digital literacy and facilitate smart learning experiences for both students and teachers. Options A, B, and D describe unrelated or broader goals that do not capture the specific focus of the 'Hi-Tech School Project'.

Answer

A. To provide financial assistance to private schools for infrastructure development.

Answer

B. To ensure access to high-speed internet connectivity in all rural households.

Answer

D. To establish specialized institutions for advanced research in educational technology.

Question 9

COVID-19 vaccines in India:‌​‍

Accepted Answer

All three and more — Covaxin, Covishield, Sputnik V, Corbevax, etc.‌​‍

Answer

Covaxin, Covishield

Answer

Only Covaxin

Answer

Sputnik also

Question 10

Block Panchayats:

Accepted Answer

152 — 152 blocks.

Answer

100

Answer

200

Answer

300

LGS Mixed Practice Test #174