LGS Mixed Practice Test #766

Question 1

Mendeleev created:‌​‍

Accepted Answer

Periodic Table — Periodic Table (1869).‌​‍

Answer

Telephone

Answer

Steam engine

Answer

Penicillin

Question 2

A newborn is delivered and at one minute of life, presents with a heart rate of 90 bpm, weak cry, some flexion of extremities, grimace reflex to stimulation, and a pale body with blue extremities. What is the Apgar score for this newborn?

Accepted Answer

B. 5 — The Apgar score is calculated based on five criteria. For this newborn: Heart rate (90 bpm) scores 1 point. Respiration (weak cry) scores 1 point. Muscle tone (some flexion) scores 1 point. Reflex irritability (grimace) scores 1 point. Color (pale body with blue extremities, i.e., acrocyanosis) scores 1 point. Summing these gives a total Apgar score of 5.

Answer

A. 4

Answer

C. 6

Answer

D. 7

Question 3

Indirect: He said to me, 'Please help me.'‌​‍

Accepted Answer

He requested me to help him — 'Please' = request. He requested me to help him.‌​‍

Answer

He ordered me to help him

Answer

He told me to help him

Answer

He asked me that help him

Question 4

Which fire extinguisher is used for electrical fires?‌​‍

Accepted Answer

CO₂ type — CO₂ (Carbon Dioxide) extinguishers are used for electrical fires because CO₂ is non-conductive and doesn't damage electrical equipment. ‌​‍Water on electrical fires causes electrocution.

Answer

Wet chemical type

Answer

Water type

Answer

Foam type

Question 5

Vitamin D deficiency causes:‌​‍

Accepted Answer

Rickets — Rickets (in children) — bone deformity. Sunlight helps synthesize Vitamin D.‌​‍

Answer

Scurvy

Answer

Pellagra

Answer

Beriberi

Question 6

Both NCF 2005 and NEP 2020 advocate for significant reforms in assessment practices. Which of the following is a common emphasis in their recommendations regarding student evaluation?

Accepted Answer

B. Integrating continuous and comprehensive evaluation (CCE) with a focus on holistic development. — The correct answer is B. Both NCF 2005 (through Continuous and Comprehensive Evaluation - CCE) and NEP 2020 advocate for holistic, continuous, and formative assessments that go beyond rote memorization and evaluate a child's all-round development. Options A and C promote high-stakes, summative testing which both policies aim to reduce, while Option D suggests an unrealistic and narrow shift in assessment modalities.

Answer

A. Moving towards purely summative assessments to ensure accountability.

Answer

C. Prioritizing high-stakes board examinations for all grades.

Answer

D. Shifting the focus entirely from written exams to oral assessments.

Question 7

The Aikya Kerala Movement for a united Malayalam-speaking state resulted in the formation of Kerala State on:

Accepted Answer

1 November 1956 — Kerala State was formed on 1 November 1956 under the States Reorganisation Act; 1 July 1949 was the Travancore-Cochin merger.

Answer

15 August 1947

Answer

26 January 1950

Answer

1 July 1949

Question 8

The basic structural and functional unit of life is:‌​‍

Accepted Answer

Cell — Cells are the smallest units of life; discovered by Robert Hooke (1665).‌​‍

Answer

Organelle

Answer

Tissue

Answer

Organ

Question 9

Most populous country (2024):‌​‍

Accepted Answer

India — India surpassed China in 2023.‌​‍

Answer

China

Answer

USA

Answer

Indonesia

Question 10

Which of the following statements best describes the difference between nuclear fission and nuclear fusion?

Accepted Answer

A. Nuclear fission involves the splitting of a heavy nucleus, while fusion combines light nuclei to form a heavier nucleus. — Nuclear fission is the process where a heavy nucleus (like uranium-235) splits into smaller nuclei, releasing energy. Nuclear fusion, in contrast, involves combining light nuclei (like hydrogen isotopes) to form a heavier nucleus, which is the process powering stars. Option A correctly captures this distinction. Option B is incorrect because fusion releases significantly more energy per unit mass than fission. Option C is partially correct but oversimplifies fission, which also requires overcoming binding energy barriers. Option D is misleading as it conflates the energy release aspect with th

Answer

B. Nuclear fission releases more energy per unit mass than nuclear fusion.

Answer

C. Nuclear fusion requires extremely high temperatures to overcome Coulomb repulsion, whereas fission does not.

Answer

D. Both fission and fusion are exothermic reactions, but fusion occurs naturally in stars while fission is man-made.

LGS Mixed Practice Test #766