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Prelims

UPSC Prelims Questions

Practice UPSC Prelims MCQs by subject and year. Free questions with explanations for focused revision.

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Q.505·Miscellaneous·2025·Easy

Which one of the following particles in the nucleus of an atom was discovered by J. Chadwick?

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Q.506·Miscellaneous·2025·Easy

Which one of the following oxides is a neutral oxide?

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Q.507·Miscellaneous·2025·Easy

I. On the dissolution of the House of the People, the Speaker shall not vacate his/her office until immediately before the first meeting of the House of the People after the dissolution. II. According to the provisions of the Constitution of India, a Member of the House of the People on being elected as Speaker shall resign from his/her political party immediately. III. The Speaker of the House of the People may be removed from his/her office by a resolution of the House of the People passed by a majority of all the then Members of the House, provided that no resolution shall be moved unless at least fourteen days' notice has been given of the intention to move the resolution. Which of the statements given above are correct?

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Q.508·Miscellaneous·2025·Easy

Consider the following statements with regard to pardoning power of the President of India : I. The exercise of this power by the President can be subjected to limited judicial review. II. The President can exercise this power without the advice of the Central Government. Which of the statements given above is/are correct?

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Q.509·Miscellaneous·2025·Easy

Consider the following statements : Statement I : Activated carbon is a good and an attractive tool to remove pollutants from effluent streams and to remediate contaminants from various industries. Statement II : Activated carbon exhibits a large surface area and a strong potential for adsorbing heavy metals. Statement III : Activated carbon can be easily synthesized from environmental wastes with high carbon content. Which one of the following is correct in respect of the above statements?

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Q.510·Miscellaneous·2025·Easy

Which one among the following is NOT included in the National Food Security Mission Commercial Crops (NFSM-CC) ?

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Q.511·Miscellaneous·2025·Easy

Which one of the following findings is NOT observed in Rutherford's Nuclear Model of Atom?

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Q.512·Miscellaneous·2025·Easy

Chronologically arrange the following political events related to Indian National Movement beginning from the earliest: 1. Formation of Swaraj Party 2. Communal Award 3. Lucknow Pact 4. Simla Conference Select the answer using the code given below:

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Q.513·Miscellaneous·2025·Easy

Which one of the following is also known as Dry ice in its solid form?

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Q.514·Miscellaneous·2025·Easy

Placing the earliest first, arrange the following countries in the chronological order in which they granted universal adult franchise: 1. USA 2. Sri Lanka 3. Japan 4. India Select the answer using the code given below:

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Q.515·Miscellaneous·2025·Easy

Which one of the following statements is NOT correct?

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Q.516·Miscellaneous·2025·Easy

Which of the following is the correct ascending order of the given minerals in terms of their presence in the Earth's crust? 1. Amphibolite 2. Mica 3. Pyroxene Select the answer using the code given below:

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Q.517·Miscellaneous·2025·Easy

Which one of the following statements is correct?

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Q.518·Miscellaneous·2025·Easy

With reference to Unmanned Aerial Vehicles (UAVs), consider the following statements: I. All types of UAVs can do vertical landing. II. All types of UAVs can do automated hovering. III. All types of UAVs can use battery only as a source of power supply. How many of the statements given above are correct?

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Q.519·Miscellaneous·2025·Easy

Consider the following: I. Cigarette butts II. Eyeglass lenses III. Car tyres How many of them contain plastic?

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Q.520·Miscellaneous·2025·Easy

Consider the following activities : I. Production of crude oil II. Refining, storage and distribution of petroleum III. Marketing and sale of petroleum products IV. Production of natural gas How many of the above activities are regulated by the Petroleum and Natural Gas Regulatory Board in our country?

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Q.521·Miscellaneous·2025·Easy

In the context of electric vehicle batteries, consider the following elements: I. Cobalt II. Graphite III. Lithium IV. Nickel How many of the above usually make up battery cathodes?

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Q.522·Miscellaneous·2025·Easy

Consider the following types of vehicles: I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell-electric hybrid vehicles How many of the above are considered as alternative powertrain vehicles?

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