2025 UPPCS Previous Year Questions – GS Paper I (Page 3)

2025ScienceGS Paper I

With reference to 'Silver articles', which of the following statements is/are correct?
1. Silver articles turn black after some time when exposed to air.
2. It happens due to coating of silver sulphide.
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Code:

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2025ScienceGS Paper I

Consider the following elements found in a typical 70 kg man and arrange them in correct increasing order.
1. Sodium
2. Potassium
3. Copper
4. Iron
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2025ScienceGS Paper I

Which of the following statements with reference to blood' is/are correct?
1. Blood is composed of plasma and different types of cells.
2. The presence of haemoglobin makes blood appear red.
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2025ScienceGS Paper I

With reference to Baking Soda', which of the following statements is/are correct?
1. It is Sodium hydrogen carbonate.
2. It is used in fire extinguishers.
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given below:
Code:

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2025ScienceGS Paper I

With reference to lichens, which of the following statements is/are correct?
1. Lichens are very good indicators of pollution.
2. Lichens grow well in polluted areas.
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Code:

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