LGS Mixed Practice Test #306

Question 1

Photosynthesis takes place in:‌​‍

Accepted Answer

Chloroplast — Chloroplasts contain chlorophyll that absorbs sunlight for photosynthesis.‌​‍

Answer

Mitochondria

Answer

Nucleus

Answer

Ribosome

Question 2

G4 nations seeking UN Security Council permanent seats:

Accepted Answer

Brazil, Germany, India, Japan — G4 (formed 2004) supports each other's bid for UNSC permanent seats. Opposed by 'Uniting for Consensus' group (Italy, Pakistan, others).

Answer

US, UK, France, Germany

Answer

USSR countries

Answer

BRICS minus Russia

Question 3

A light ray passes from air (refractive index = 1.00) into a glass slab (refractive index = 1.52) at an angle of incidence of 30°. What will be the angle of refraction inside the glass slab? (Use Snell's law: n₁ sinθ₁ = n₂ sinθ₂)

Accepted Answer

B. 25.4° — Using Snell's law: sinθ₂ = (n₁/n₂) * sinθ₁ = (1.00/1.52) * sin(30°) ≈ 0.3289, so θ₂ ≈ arcsin(0.3289) ≈ 19.2°. Option A (19.2°) is correct. Option B (25.4°) is a common miscalculation from incorrect substitution. Option C (30.0°) assumes no refraction. Option D (41.8°) results from reversing n₁ and n₂.

Answer

A. 19.2°

Answer

C. 30.0°

Answer

D. 41.8°

Question 4

Shape of water (H₂O) molecule is:‌​‍

Accepted Answer

Bent/V-shaped — Two lone pairs on O distort tetrahedral to ~104.5°. Explained by VSEPR.‌​‍

Answer

Linear

Answer

Trigonal planar

Answer

Tetrahedral

Question 5

Kerala's Social Welfare - Pension schemes cover:‌​‍

Accepted Answer

Multiple beneficiary groups — Social security pensions.‌​‍

Answer

Disabled only

Answer

Only elderly

Answer

Only widows

Question 6

A patient's arterial blood gas (ABG) analysis shows a pH of 7.25 (low), pCO2 of 60 mmHg (high), and a normal bicarbonate level. This indicates which acid-base disturbance?

Accepted Answer

B. Respiratory acidosis — A low pH (acidosis) combined with a high pCO2 (carbon dioxide, an acid) indicates respiratory acidosis. The lungs are failing to adequately excrete CO2, leading to an accumulation of carbonic acid in the blood. A normal bicarbonate level suggests that the kidneys have not yet had time to compensate, or compensation is not occurring. Metabolic acidosis involves a low pH and low bicarbonate, while alkalosis involves a high pH.

Answer

A. Metabolic acidosis

Answer

C. Metabolic alkalosis

Answer

D. Respiratory alkalosis

Question 7

First human in space was:‌​‍

Accepted Answer

Yuri Gagarin (USSR, 12 April 1961) — Yuri Gagarin orbited Earth aboard Vostok 1 — 108-minute flight. ‌​‍April 12 celebrated as International Day of Human Spaceflight.

Answer

Neil Armstrong

Answer

Alan Shepard

Answer

John Glenn

Question 8

The most abundant gas in Earth's atmosphere is:‌​‍

Accepted Answer

Nitrogen — Nitrogen ~78%, Oxygen ~21% in dry atmosphere.‌​‍

Answer

Carbon dioxide

Answer

Argon

Answer

Oxygen

Question 9

Acceleration due to gravity on Earth is approximately:‌​‍

Accepted Answer

9.8 m/s² — g ≈ 9.81 m/s² at sea level; often rounded to 10 m/s² for calculations.‌​‍

Answer

1.6 m/s²

Answer

11.2 m/s²

Answer

10 m/s² exactly

Question 10

A psychologist administers an IQ test to a child and finds a high score in logical-mathematical reasoning but a low score in interpersonal skills. If the psychologist applies Gardner's MI theory to interpret these scores, what is the MOST appropriate conclusion?

Accepted Answer

B. The child has strong logical intelligence but weak social intelligence, indicating a need for targeted interventions. — Gardner's MI theory allows for high performance in one intelligence (e.g., logical-mathematical) while another (e.g., interpersonal) may be weaker. The psychologist would conclude that the child excels in logical reasoning but may struggle socially, requiring interventions to develop interpersonal skills. Option A misapplies Spearman's 'g' factor, while Option C incorrectly dismisses the test's validity. Option D conflates interpersonal skills with emotional intelligence, which Gardner treats as a distinct domain.

Answer

A. The child has a low overall IQ and may need special education.

Answer

C. The IQ test is invalid because it does not measure all forms of intelligence.

Answer

D. The child's low interpersonal score suggests a deficit in emotional intelligence.

LGS Mixed Practice Test #306