LGS Mixed Practice Test #471

Question 1

Starch and cellulose are both:‌​‍

Accepted Answer

Polysaccharides — Both are polymers of glucose; humans digest starch but not cellulose.‌​‍

Answer

Disaccharides

Answer

Monosaccharides

Answer

Lipids

Question 2

The Kerala Land Reforms (Amendment) Act gave permanent rights to tenants from:‌​‍

Accepted Answer

1 January 1970 — Kerala Land Reforms (Amendment) Act came into effect on 1 January 1970 abolishing the Janmi system.‌​‍

Answer

18 April 1991

Answer

1 November 1956

Answer

1 January 1957

Question 3

NEP 2020 emphasizes Continuous Professional Development (CPD) for teachers, mandating a minimum of 50 hours per year. What is the primary objective of this emphasis on regular CPD for teachers within the framework of NEP and SCERT's initiatives?

Accepted Answer

B. To ensure teachers are updated with the latest pedagogical approaches, subject content, and technology for improved student outcomes. — The primary objective of mandatory Continuous Professional Development (CPD) under NEP 2020 is to empower teachers with updated knowledge, innovative pedagogical skills, and effective use of technology. This ensures they can adapt to evolving educational needs, enhance teaching-learning processes, and ultimately improve student learning outcomes and holistic development.

Answer

A. To increase the administrative workload of teachers by introducing new reporting requirements.

Answer

C. To facilitate a hierarchical promotion system based solely on the number of training hours completed.

Answer

D. To replace traditional classroom teaching with online learning modules for teachers.

Question 4

Idukki is the ___ district:‌​‍

Accepted Answer

Largest by area — Largest by area (~4,479 sq km).‌​‍

Answer

Smallest

Answer

Most populated

Answer

Newest

Question 5

Nobel Peace Prize awarded at:‌​‍

Accepted Answer

Oslo — Peace Prize at Oslo, Norway. All others at Stockholm, Sweden.‌​‍

Answer

Stockholm

Answer

Geneva

Answer

The Hague

Question 6

Biodiversity loss extinction theory (Evil Quartet) — one factor is:‌​‍

Accepted Answer

Both (a) and (b) — 4 factors: habitat loss, over-exploitation, alien species, co-extinctions. ‌​‍Water hyacinth (Eichhornia), Lantana in India.

Answer

Only climate

Answer

Over-exploitation

Answer

Alien species invasions (e.g., Nile perch in Lake Victoria wiped out cichlids)

Question 7

Most common instrument used to measure relative humidity:‌​‍

Accepted Answer

Hygrometer — Hygrometer measures humidity; barometer measures pressure; hydrometer measures liquid density.‌​‍

Answer

Hydrometer

Answer

Ceilometer

Answer

Barometer

Question 8

Adequate ventilation in indoor spaces is crucial for preventing the spread of respiratory infections. Which of the following is the primary mechanism by which good ventilation helps reduce transmission?

Accepted Answer

B. It dilutes airborne pathogens, reducing their concentration in the air. — Good ventilation primarily helps prevent the spread of respiratory infections by diluting airborne pathogens. By introducing fresh air and removing stale air, it reduces the concentration of infectious particles in indoor environments, thereby lowering the risk of inhalation by occupants. While some filters can remove particles, and temperature/humidity can affect pathogen survival, dilution is the main principle of ventilation for infection control.

Answer

A. It increases the humidity, making the air less conducive for pathogen survival.

Answer

C. It filters out all airborne particles, including viruses and bacteria.

Answer

D. It raises the ambient temperature, deactivating heat-sensitive microbes.

Question 9

Acidic strength order: HCOOH, CH₃COOH, ClCH₂COOH:‌​‍

Accepted Answer

ClCH₂COOH > HCOOH > CH₃COOH — Electron withdrawal (Cl, –I) stabilises carboxylate → stronger acid. ‌​‍Methyl (+I) destabilises → weaker.

Answer

Same

Answer

HCOOH only

Answer

CH₃COOH > HCOOH > ClCH₂COOH

Question 10

Total rivers:‌​‍

Accepted Answer

44 — 44 rivers (41 west, 3 east).‌​‍

Answer

34

Answer

38

Answer

50

LGS Mixed Practice Test #471