LGS Mixed Practice Test #329

Question 1

Lasers produce:

Accepted Answer

Coherent, monochromatic, collimated, intense light — Stimulated emission (Einstein, 1917). Population inversion needed. Nobel Townes, Basov, Prokhorov (1964).

Answer

Incoherent light

Answer

Heat only

Answer

X-rays only

Question 2

Who is called the 'Missile Man of India'?‌​‍

Accepted Answer

A.P.J. Abdul Kalam — Dr. ‌​‍A.P.J. Abdul Kalam led DRDO's Integrated Guided Missile Development Programme.

Answer

C.V. Raman

Answer

Homi Bhabha

Answer

Vikram Sarabhai

Question 3

An unknown element 'M' exhibits the following characteristic properties: it readily forms compounds with variable oxidation states, its ions often produce intensely coloured solutions in water, and it is frequently employed as a catalyst in various chemical reactions. Based on these observations, to which block of the modern periodic table does element 'M' most likely belong?

Accepted Answer

C. d-block — The described properties—variable oxidation states, formation of intensely coloured ions, and catalytic activity—are hallmarks of transition metals. Transition metals occupy the d-block of the periodic table, where their partially filled d-orbitals allow for these characteristics. s-block elements typically have fixed oxidation states and form colourless ions, while p-block and f-block elements do not consistently exhibit this specific combination of properties to the same extent as d-block elements.

Answer

A. s-block

Answer

B. p-block

Answer

D. f-block

Question 4

The Temple Entry Proclamation of Sri Chithira Thirunal was declared on:

Accepted Answer

1 November 1932 — Travancore Temple Entry Proclamation issued 12 November 1936. Most listed as 1 November 1936 in PSC keys (option A). Verifying — proclamation date 12 Nov 1936; PSC commonly accepts 'November 1936' option (A) or (C) per source. Standard: 1 November 1936 (A).

Answer

1 November 1936

Answer

1 October 1936

Answer

1 January 1936

Question 5

Travancore-Cochin merged:‌​‍

Accepted Answer

1 Jul 1949 — 1 July 1949.‌​‍

Answer

15 Aug 1947

Answer

26 Jan 1950

Answer

1 Nov 1956

Question 6

FIH Hockey India win:‌​‍

Accepted Answer

Olympic bronze 2024 Paris — Bronze medal Paris 2024.‌​‍

Answer

Gold

Answer

None

Answer

Silver

Question 7

Which of the following factors does the photoelectric effect depend on?‌​‍

Accepted Answer

Frequency (threshold); intensity affects current — Below threshold frequency, no emission. Explained by Einstein (Nobel 1921).‌​‍

Answer

Intensity only

Answer

Only temperature

Answer

Colour only

Question 8

United Nations has how many official languages?‌​‍

Accepted Answer

6 (Arabic, Chinese, English, French, Russian, Spanish) — UN 6 official languages. ‌​‍UN Day 24 October. 193 member states. ‌​‍6 principal organs: GA, SC, ECOSOC, Secretariat, ICJ, Trusteeship Council (suspended).

Answer

10

Answer

5

Answer

3

Question 9

What is the primary mechanism of action of statins (HMG-CoA reductase inhibitors) in lowering cholesterol?

Accepted Answer

C. Reducing cholesterol synthesis in the liver by inhibiting a key enzyme. — Statins work by competitively inhibiting HMG-CoA reductase, a crucial enzyme in the mevalonate pathway responsible for endogenous cholesterol synthesis in the liver. This reduction in hepatic cholesterol synthesis leads to an upregulation of LDL receptors on hepatocytes, increasing the clearance of LDL from the blood. Other options describe mechanisms of different lipid-lowering drugs.

Answer

A. Increasing the excretion of bile acids.

Answer

B. Inhibiting the absorption of dietary cholesterol from the intestine.

Answer

D. Enhancing the activity of lipoprotein lipase.

Question 10

The Temple Entry Proclamation of 1936 by Maharaja Chithira Thirunal Balarama Varma in Travancore was a pivotal moment in Kerala's social reform history. Beyond being a humanitarian act, what underlying factors and strategic considerations most significantly influenced its timing and implementation by the princely state?

Accepted Answer

C. The cumulative impact of prolonged agitations like the Vaikom and Guruvayoor Satyagrahas, Mahatma Gandhi's advocacy, and the broader nationalist movement's emphasis on social justice created immense pressure, prompting the state to act to preserve its legitimacy and project a progressive image. — The Temple Entry Proclamation was the culmination of decades of sustained social reform movements, most notably the Vaikom (1924-25) and Guruvayoor (1931-32) Satyagrahas. Mahatma Gandhi's active support and the growing influence of the Indian nationalist movement, which increasingly championed social justice, exerted immense pressure on the Travancore state. The Dewan, Sir C.P. Ramaswami Iyer, and the Maharaja recognized the need to address these deeply entrenched social inequalities to maintain the legitimacy of the princely rule and project a progressive image in the face of rising public di

Answer

A. It was a direct response to the Quit India Movement's demands for social equality, which had gained significant traction within Travancore by the mid-1930s.

Answer

B. The Travancore government, under the guidance of Sir C.P. Ramaswami Iyer, sought to preempt widespread communist uprisings by addressing social grievances before they escalated into political unrest.

Answer

D. The proclamation was a result of direct intervention by the British Viceroy, who saw it as an opportunity to weaken the influence of conservative Hindu organizations in South India.

LGS Mixed Practice Test #329