LGS Mixed Practice Test #391

Question 1

Rusting of iron is a process of:‌​‍

Accepted Answer

Oxidation — Rusting is oxidation of iron: Iron + Oxygen + Moisture → Iron Oxide (rust/Fe₂O₃). ‌​‍It requires both oxygen and water.

Answer

Reduction

Answer

Sublimation

Answer

Fermentation

Question 2

The Cape of Good Hope, rounded by Dias in 1488, is located at the southern tip of:

Accepted Answer

Africa — Cape of Good Hope is in present-day South Africa.

Answer

South America

Answer

Asia

Answer

Australia

Question 3

How many appointments were made through Kerala PSC under LDF in the past decade?‌​‍

Accepted Answer

3.11 lakh — Over 3.11 lakh appointments made through PSC under LDF compared to 1.49 lakh under the previous UDF government.‌​‍

Answer

1.49 lakh

Answer

2.11 lakh

Answer

4.11 lakh

Question 4

The SI unit of acceleration is:

Accepted Answer

m/s² — Acceleration = change in velocity / time; SI unit is m/s².

Answer

m/s

Answer

km/h

Answer

N/kg

Question 5

Election Commissioner of India (CEC 2024-26):

Accepted Answer

Both A and B — Rajiv Kumar till Feb 2025; Gyanesh Kumar after.

Answer

Rajiv Kumar

Answer

Gyanesh Kumar

Answer

Sushil Chandra

Question 6

Artificial Intelligence popular paradigms:‌​‍

Accepted Answer

Symbolic (rule-based) and Connectionist (neural networks) — Alan Turing (Turing test, 1950). ‌​‍Dartmouth Conference 1956 coined AI. Deep learning resurgence from ~2012 (ImageNet).

Answer

Only ML

Answer

Only expert systems

Answer

Symbolic only

Question 7

A patient is experiencing severe muscle weakness due to a mitochondrial disorder affecting energy production. Which molecule, directly produced by cellular respiration, is the primary immediate source of energy for muscle contraction and other cellular activities?

Accepted Answer

C. Adenosine Triphosphate (ATP) — ATP is the universal energy currency of the cell, directly powering most cellular processes including muscle contraction. Glucose is the primary fuel source, which is broken down to produce ATP. Pyruvate is an intermediate in glucose metabolism, and lactic acid is a byproduct of anaerobic glycolysis, not a direct energy source.

Answer

A. Glucose

Answer

B. Pyruvate

Answer

D. Lactic Acid

Question 8

A patient who was recently diagnosed with a terminal illness insists that their lab results must be wrong and demands a re-test, despite multiple confirmations from the medical team. Which defense mechanism is the patient most likely employing in this situation?

Accepted Answer

C. Denial — Denial is a defense mechanism where an individual refuses to accept a painful reality or fact, often seen in initial reactions to severe diagnoses. Regression involves reverting to an earlier developmental stage, rationalization involves creating logical but false explanations for unacceptable behavior, and projection involves attributing one's own unacceptable thoughts to others.

Answer

A. Regression

Answer

B. Rationalization

Answer

D. Projection

Question 9

Alpha particle is:‌​‍

Accepted Answer

Helium nucleus (2p+2n) — Beta: electron/positron. ‌​‍Gamma: EM photon. Alpha most ionising, least penetrating.

Answer

Electron

Answer

Photon

Answer

Neutron

Question 10

The longest part of the human digestive system is:‌​‍

Accepted Answer

Small intestine — The small intestine is the longest part of the alimentary canal at about 6-7 metres. ‌​‍Most digestion and nutrient absorption occurs here.

Answer

Stomach

Answer

Large intestine

Answer

Oesophagus

LGS Mixed Practice Test #391