LGS Mixed Practice Test #653

Question 1

pH value of pure water is:‌​‍

Accepted Answer

7 — Pure water has a pH of 7, which is neutral. ‌​‍pH below 7 is acidic, above 7 is alkaline/basic. This is one of the most basic chemistry facts tested in PSC.

Answer

14

Answer

0

Answer

1

Question 2

Salt bridge in a galvanic cell is used to:

Accepted Answer

Maintain electrical neutrality and complete the circuit — Salt bridge (KCl/KNO₃ in gel) allows ion flow between half-cells, maintaining charge balance.

Answer

Generate electricity

Answer

Provide heat

Answer

Dissolve electrodes

Question 3

Which statement accurately describes P waves?‌​‍

Accepted Answer

Faster (primary, compressional, through solid & liquid) — S (secondary, shear) don't travel through liquid — shadow zone proves Earth's outer core is liquid. ‌​‍Surface waves (Rayleigh, Love) cause most damage.

Answer

Surface only

Answer

Slower

Answer

Same speed

Question 4

The process of adding H₂ to unsaturated oils to convert them to solid fats is:

Accepted Answer

Hydrogenation — Vegetable oils + H₂ (Ni catalyst) → saturated fats (vanaspati, margarine).

Answer

Esterification

Answer

Polymerisation

Answer

Saponification

Question 5

Partnership firm is governed by:

Accepted Answer

Indian Partnership Act 1932 — Max 50 partners (Companies Act 2013 Rule). Partnership Deed recommended. Registration optional but advisable.

Answer

Companies Act

Answer

IT Act

Answer

CrPC

Question 6

Density of water:‌​‍

Accepted Answer

1 g/cm³ — 1 g/cm³ or 1000 kg/m³ at 4°C.‌​‍

Answer

100 g/cm³

Answer

10 g/cm³

Answer

0.1 g/cm³

Question 7

Gambhir coach India:‌​‍

Accepted Answer

Post T20 WC 2024 — Head coach from July 2024.‌​‍

Answer

2025

Answer

Never

Answer

2023

Question 8

Vaikom Satyagraha:‌​‍

Accepted Answer

1924-25 — 1924-25 for road access near temple.‌​‍

Answer

1920-21

Answer

1930-31

Answer

1936

Question 9

Father of Electricity is:‌​‍

Accepted Answer

Michael Faraday — Michael Faraday is called the father of electricity for his work on electromagnetic induction.‌​‍

Answer

J.J. Thomson

Answer

André-Marie Ampère

Answer

Thomas Edison

Question 10

A primary school teacher in Kerala observes that a student in Class 5 is struggling significantly and has not achieved the expected learning outcomes despite remedial efforts. According to the Right to Education Act, 2009, and its implementation in Kerala, what is the most appropriate action for the teacher to take regarding the student's promotion to Class 6?

Accepted Answer

C. Promote the student to Class 6, ensuring continuous and comprehensive evaluation (CCE) and providing additional support to help them catch up. — The Right to Education Act, 2009, enforces a 'no detention policy' up to Class 8, focusing on Continuous and Comprehensive Evaluation (CCE) rather than failing students. Therefore, the teacher must promote the student while ensuring ongoing academic support and remedial measures are provided within the school framework to help them achieve desired learning outcomes.

Answer

A. Detain the student in Class 5 to ensure mastery of foundational concepts before promotion.

Answer

B. Promote the student to Class 6 but recommend intensive remedial coaching outside school hours.

Answer

D. Refer the student for psychological counseling and special education assessment before making a promotion decision.

LGS Mixed Practice Test #653