In which type of rock is limestone found?
چونا پتھر کس قسم کے پتھر میں پایا جاتا ہے؟
- Sedimentary rock
- Igneous rock
- Metamorphic rock
- None of these
Explanation
- Limestone is a sedimentary rock.
- It is formed mainly from the skeletal fragments of marine organisms such as coral and shells.
- It is commonly used in cement, construction, and soil treatment.
- It is main component is Calcium carbonate (CaCO₃).
Last verified on 17-01-2026
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- Reactive metals
- Alkali metals
- Noble metals
- Transition metals
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کاربونیٹڈ پانی کس چیز کا محلول ہے؟
- Water oxidised by carbon at high temper
- Carbon in water under high pressure
- Carbon is oxidised by water under high pressure
- None of these
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کس قسم کے ردِعمل میں کے سی درجہ حرارت کے ساتھ براہِ راست بڑھتا ہے؟
- Neutralization reaction
- Endothermic
- Exothermic
- None of these
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درج ذیل میں سے کون سا تیزابی بفر ہے؟
- HCN+NaCN
- CH3COOH+NH4Cl
- HCl+NaCl
- HCL+NH4Cl
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- Electricity
- Freezer
- O₂
- None of these
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