Class 10 Social Science · Chapter 3

Samacheer Class 10 Social Science - World War II

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Chapter-wise textbook exercise answers for World War II with validation-aware solutions.

Answers marked verified were checked during generation against the chapter context and source question text.
Sections in this chapter
EXERCISE I 3EXERCISE I - Choose the correct answer 2Pre-Exercise / Glossary Questions 1III - Choose the correct statement (Assertion-Reason) 1II - Fill in the blanks 4V - Answer the questions briefly 7VI - Answer in detail 2III - Choose the correct statement 3IV - Match the Following 1VIII - Map Work 1
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1EXERCISE I3 questions
Q.1When did the Japanese formally sign their surrender?v
  1. a. 2 September, 1945
  2. b. 2 October, 1945
  3. c. 15 August, 1945
  4. d. 12 October, 1945
Solution

Japan formally signed the Instrument of Surrender aboard the USS Missouri in Tokyo Bay on 2 September 1945.

Answer:

a

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Q.2Who initiated the formation of League of Nations?v
  1. a. Roosevelt
  2. b. Chamberlain
  3. c. Woodrow Wilson
  4. d. Baldwin
Solution

US President Woodrow Wilson proposed the League of Nations as part of his Fourteen Points to ensure collective security after World War I.

Answer:

c

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Q.3Where was the Japanese Navy defeated by the US Navy?v
  1. a. Battle of Guadalcanal
  2. b. Battle of Midway
  3. c. Battle of Leningrad
  4. d. Battle of El Alamein
Solution

The decisive defeat of the Japanese carrier fleet by the US Navy occurred at the Battle of Midway (June 1942).

Answer:

b

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2EXERCISE I - Choose the correct answer2 questions
Q.1When did the Japanese formally sign their surrender?v
  1. a. 2 September, 1945
  2. b. 2 October, 1945
  3. c. 15 August, 1945
  4. d. 12 October, 1945
Solution

The Instrument of Surrender was signed on 2 September 1945 aboard the USS Missouri in Tokyo Bay.

Answer:

a

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Q.3Where was the Japanese Navy defeated by the US Navy?v
  1. a. Battle of Guadalcanal
  2. b. Battle of Midway
  3. c. Battle of Leningrad
  4. d. Battle of El Alamein
Solution

The Battle of Midway (June 1942) marked a turning point in the Pacific with a major US victory over the Japanese Navy.

Answer:

b

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3Pre-Exercise / Glossary Questions1 questions
Q.2Who initiated the formation of League of Nations?v
  1. a. Roosevelt
  2. b. Chamberlain
  3. c. Woodrow Wilson
  4. d. Baldwin
Solution

Woodrow Wilson initiated the idea of the League of Nations to prevent future wars and promote collective security.

Answer:

c

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4III - Choose the correct statement (Assertion-Reason)1 questions
Q.1Assertion: President Roosevelt realised that the United States had to change its policy of isolation. Reason: He started a programme of Lend Lease in 1941.v
  1. a. Both A and R are correct
  2. b. A is right but R is not the correct reason
  3. c. Both A and R are wrong
  4. d. R is right but it has no relevance to A
Solution

Both statements are correct. Roosevelt moved away from strict isolationism and the Lend-Lease Act (1941) allowed the US to supply Allied nations with war material, reflecting this policy change.

Answer:

a

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5II - Fill in the blanks4 questions
Q.II-1Hitler attacked _____ which was a demilitarised zone.v
Solution

Hitler remilitarised the Rhineland in 1936, violating the Treaty of Versailles and the Locarno Treaties. (Fill: the Rhineland)

Answer:

the Rhineland

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Q.II-2The alliance between Italy, Germany and Japan is known as _____.v
Solution

The alliance of Italy, Germany and Japan is known as the Axis Powers; formally they signed the Tripartite Pact in 1940.

Answer:

the Axis Powers (Tripartite Pact)

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Q.II-3______ (British Prime Minister) resigned in 1940.v
Solution

Neville Chamberlain resigned as British Prime Minister in May 1940 following criticism of his handling of the war; Winston Churchill succeeded him.

Answer:

Neville Chamberlain

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Q.II-4_____ is a device used to find out the enemy aircraft from a distance.v
Solution

Radar (Radio Detection and Ranging) is a device used to detect and locate enemy aircraft and ships from a distance.

Answer:

Radar

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6V - Answer the questions briefly7 questions
Q.V-1Who were the three prominent dictators of the post World War I ?v
Solution

The three prominent dictators after World War I were Benito Mussolini (Italy), Adolf Hitler (Germany) and Joseph Stalin (Soviet Union).

Answer:

Benito Mussolini, Adolf Hitler, Joseph Stalin

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Q.V-2How did Hitler get the support from the people of Germany?v
Solution

Hitler gained popular support by promising economic recovery and employment after the Great Depression, using powerful propaganda (Goebbels) and mass rallies, exploiting nationalism and resentment over the Treaty of Versailles, scapegoating minorities (especially Jews), and by consolidating power through intimidation (SA/SS) and elimination of political opposition.

Answer:

See solution

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Q.V-3Describe the Pearl Harbour incident.v
Solution

On 7 December 1941, the Japanese launched a surprise air attack on the US Pacific Fleet at Pearl Harbor, Hawaii, sinking and damaging battleships and aircraft and causing over 2,400 American deaths. The attack led directly to the United States declaring war on Japan and entering World War II.

Answer:

See solution

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Q.V-4What do you know of Beveridge Report?v
Solution

The Beveridge Report (1942), by William Beveridge, proposed sweeping social insurance and welfare reforms in Britain to tackle the 'five giants'—Want, Disease, Ignorance, Squalor and Idleness—and laid the basis for the post-war welfare state including the National Health Service.

Answer:

See solution

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Q.V-5Name the Bretton Woods Twins.v
Solution

The 'Bretton Woods twins' are the International Monetary Fund (IMF) and the World Bank (IBRD), established at the Bretton Woods Conference (1944) to provide financial stability and reconstruction funding after World War II.

Answer:

International Monetary Fund (IMF) and World Bank (International Bank for Reconstruction and Development)

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Q.V-6What are the objectives of IMF?v
Solution

Concise list of IMF objectives as above.

Answer:

The main objectives of the International Monetary Fund (IMF) are:

  • Promote international monetary cooperation and exchange-rate stability.
  • Facilitate the balanced growth of international trade.
  • Provide resources to member countries facing balance-of-payments problems to help restore stability.
  • Assist in establishing a multilateral system of payments and reduce restrictions on international trade.
  • Give policy advice, technical assistance and short-/medium-term financial support to members.
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Q.V-7When was the Charter of the UN signed?v
  1. a. June 26, 1942
  2. b. June 26, 1945
  3. c. January 1, 1942
  4. d. January 1, 1945
Solution

The UN Charter was signed on June 26, 1945, at the United Nations Conference on International Organization in San Francisco.

Answer:

b

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7VI - Answer in detail2 questions
Q.VI-1Analyse the effects of the World War II.v
Solution

Major effects of World War II:
- Political: Emergence of the United States and the Soviet Union as superpowers; beginning of the Cold War; creation of the United Nations to promote peace and cooperation; end of many European empires and acceleration of decolonisation.
- Economic: Vast destruction of infrastructure in Europe and Asia; US economic dominance and the Marshall Plan for European recovery; establishment of Bretton Woods institutions (IMF and World Bank) to stabilise international finance.
- Social and demographic: Tens of millions dead, massive refugee and displaced populations, and the Holocaust’s genocide of six million Jews and other victims.
- Technological and military: Rapid advancement in technology and warfare (nuclear weapons, radar, jet engines); changed nature of warfare and deterrence.
- Institutional and welfare changes: Expansion of welfare policies in several countries (e.g., post-war Britain), and stronger international legal and human-rights frameworks.
- Territorial changes: Redrawn borders in Europe and Asia and foundation for future conflicts and alliances (NATO, Warsaw Pact).
(Concise exam-ready summary.)

Answer:

See solution

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Q.VI-2Assess the structure and the activities of the UN.v
Solution

Structure:
- General Assembly: forum of all member states to discuss and make recommendations.
- Security Council: primary responsibility for maintaining international peace and security; five permanent members (US, UK, USSR/Russia, China, France) with veto power and ten non-permanent members.
- Secretariat: administrative organ headed by the Secretary-General.
- Economic and Social Council (ECOSOC): coordinates economic, social, and related work of UN agencies.
- International Court of Justice (ICJ): judicial arm to settle legal disputes between states.
- Trusteeship Council: originally supervised trust territories; now inactive.
Activities:
- Peacekeeping and conflict resolution: deploying peacekeeping forces and mediating disputes.
- Sanctions and collective security measures via the Security Council.
- Humanitarian assistance and development programs: UNICEF, UNHCR, WFP.
- Promotion of human rights and international law: Universal Declaration of Human Rights, treaties and monitoring bodies.
- Coordinating global health, education and cultural efforts via WHO, UNESCO.
Overall assessment: The UN provides a unique global forum and tools for diplomacy, peacekeeping, humanitarian aid and international law, though effectiveness depends on member-state cooperation and Security Council politics (veto power can limit action).

Answer:

See solution

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8III - Choose the correct statement3 questions
Q.4Where did the US drop its first atomic bomb?v
  1. a. Kavashaki
  2. b. Tokyo
  3. c. Hiroshima
  4. d. Nagasaki
Solution

The first atomic bomb used in war was dropped on Hiroshima on 6 August 1945. (Option 'Kavashaki' appears to be an OCR error.)

Answer:

c

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Q.5Who were mainly persecuted by Hitler?v
  1. a. Russians
  2. b. Arabs
  3. c. Turks
  4. d. Jews
Solution

Hitler's racial policies targeted Jews as the primary group for persecution, culminating in the Holocaust.

Answer:

d

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Q.6Which Prime Minister of England signed the Munich Pact with Germany ?v
  1. a. Chamberlain
  2. b. Winston Churchill
  3. c. Lloyd George
  4. d. Stanley Baldwin
Solution

Neville Chamberlain, the British Prime Minister in 1938, signed the Munich Agreement (Munich Pact) with Germany.

Answer:

a

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9IV - Match the Following1 questions
Q.IVMatch the following: 1. Blitzkrieg - Stalingrad 2. Royal Navy - Solomon Island 3. Volga - Britain 4. Guadalcanal - lightning strikev
Solution

The OCR mixed pairs. Correct associations: Blitzkrieg (German tactic) means 'lightning strike'; the Royal Navy is the navy of Britain; the Volga is the river at/near Stalingrad; Guadalcanal is an island in the Solomon Islands.

Answer:

Correct matching (OCR entries were jumbled):
1. Blitzkrieg — lightning strike
2. Royal Navy — Britain
3. Volga — Stalingrad
4. Guadalcanal — Solomon Islands

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10VIII - Map Work1 questions
Q.VIIIMark the following on the world map. 1. Axis Power Countries 2. Allied Power Countries 3. Hiroshima, Nagasaki, Hawaii Islands, Moscow, San Fransicov
Solution

Give students guidance to shade/label the listed countries and put location dots for the named cities/islands; corrected spelling: 'San Fransico' -> 'San Francisco'.

Answer:

Instructions and places to mark:

1) Axis Powers (mark on map): Germany (Central Europe), Italy (southern Europe), Japan (East Asia). You may also indicate their co-belligerents (e.g., Hungary, Romania, Bulgaria) if required.

2) Allied Powers (mark on map): United Kingdom (Britain), Soviet Union (USSR), United States of America, China, France (Free French).

3) Specific places:
- Hiroshima: western Honshu, Japan (near 34.3853° N, 132.4553° E)
- Nagasaki: northwestern Kyushu, Japan (near 32.7503° N, 129.8777° E)
- Hawaii Islands: central North Pacific (mark the main island of Oahu/Honolulu or the archipelago around 19.8968° N, 155.5828° W)
- Moscow: western Russia (approx. 55.7558° N, 37.6173° E)
- San Francisco: west coast of USA, California (approx. 37.7749° N, 122.4194° W).

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