Explanation

- Limestone (CaCO₃) is the primary raw material in cement manufacturing.

- When heated in a kiln, it undergoes thermal decomposition:  

  CaCO₃ → CaO (quicklime) + CO₂

- The resulting Calcium Oxide (CaO) is a key component in the formation of cement clinker.

Explanation

- Hydrogenation is a chemical process where hydrogen gas (H₂) is added to unsaturated oils (liquid) in the presence of a nickel catalyst.

- This converts unsaturated fats into saturated fats (solid at room temperature).

- Commonly used in making margarine and vanaspati ghee.

Explanation

Volume of a cylinder  

- Formula: V = πr²h  

- Where r = radius, h = height.  

- Volume measures the capacity inside the cylinder.

Explanation

Total loss = 8 liters + 2 liters

= 10 liters

Explanation

- The Haber process is used to synthesize ammonia (NH₃) from nitrogen (N₂) and hydrogen (H₂).  

- Optimal temperature range: 400–450°C

- Pressure: 200–250 atm

- Catalyst: Iron (Fe) with promoters like K₂O or Al₂O₃

- High temperature increases the rate but lowers the yield (ammonia formation is exothermic).

- A balance is maintained for efficiency.

Explanation

Let's evaluate the expressions using the given definition of a * b:

3 * 4 = 3 + 4 + (3)(4) = 3 + 4 + 12 = 19

2 * 3 = 2 + 3 + (2)(3) = 2 + 3 + 6 = 11

Now, let's subtract:

3 * 4 - 2 * 3 = 19 - 11 = 8

Explanation

- According to Boyle’s Law, at constant temperature, volume is inversely proportional to pressure.

- But if both pressure and temperature increase, the effect depends on which increases more.

- Increasing pressure compresses gases → volume decreases.

- Rising temperature tends to expand gases.

Explanation

(a + b) – (a – b)  

= a + b – a + b  

= 2b

Explanation

Heat of reaction refers to the amount of heat released or absorbed during a chemical reaction.

If heat is released, the reaction is exothermic; if absorbed, it's endothermic.

Explanation

Albuminophobia is a rare phobia that involves an excessive or irrational fear of water or albumin, a type of protein found in water.