Explanation

Animal waste is generally more hazardous than plant waste.

Reason:

- Animal waste can carry pathogens (bacteria, viruses, parasites).

- It produces methane and ammonia, which are harmful gases.

- It can contaminate water sources if not managed properly.

- Contains nitrogen and phosphorus, which cause water pollution (eutrophication).

Explanation

- Vitamin E is a fat-soluble antioxidant.

- It helps protect cells from damage.

- Found more in whole milk due to its fat content.

- Also present in higher amounts in milk fat products like butter and cream.

Explanation

Vegetable oil + Sulphur dioxide → Margarine

- Vegetable oil is hydrogenated in the presence of catalysts.  

- Sulphur dioxide (SO₂) acts as a preservative in the margarine-making process.  

- The final product: Margarine — a butter substitute used in cooking and baking.

Explanation

The provided sentence, "They have been working here since 1995,"

The sentence uses "have been working", which is the present perfect continuous tense.

Indicating an action that started in the past and is continuing.

Explanation

Identify the specific instance:

The word "Black" refers to a specific, singular color.

Recognize the class:

All specific colors are members of the more general class of "Color".

Perform the logical grouping:

Because "Black" is an instance of "Color," it is logically consistent to move up the hierarchy and substitute the specific term ("Black") with its more general, categorical term ("Color"). 

Explanation

- If 6 men invest 33,000 → 1 man invests = 33,000 / 6 = 5,500  

- 18 men invest = 18 × 5,500 = Rs. 99,000  

Explanation

- The Haber process combines 1 part nitrogen (N₂) and 3 parts hydrogen (H₂) to form ammonia (NH₃).  

- Balanced reaction: N₂ + 3H₂ → 2NH₃

Explanation

 In the second quadrant: sin is positive, cos and tan are negative.  

- So, the condition fits only in Quadrant II.

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Explanation

Gypsum (calcium sulfate dihydrate, (CaSO4 ⋅ 2H2O) is added to cement primarily to regulate the setting time.

The percentage of gypsum in cement is usually around 2-5%.

It prevents the cement from setting too quickly by controlling the rate at which the cement hydrates and hardens. 

Explanation

Given: (x + 1/x)(x − 1/x)

Use the formula for difference of squares:  

(a + b)(a − b) = a² − b²

Here, a = x and b = 1/x

So, (x + 1/x)(x − 1/x) = x² − (1/x)²  

= x² − 1/x²