Question Discussion & Solution

The correct answer is ​Sodium benzoate.

Key Points

• Sodium benzoate is a preservative that is most widely used in acidic foods such as salad dressings, carbonated drinks, jams and fruit juices, pickles, condiments, and yoghurt toppings.
• Food preservation is a method to protect food from unwanted microbial growth and is done to preserve food for a longer time.
• Sodium benzoate is a widely used preservative found in many foods and soft drinks to prolong shelf life.
• It is an odourless, crystalline powder made by combining benzoic acid and sodium hydroxide.
• Benzoic acid is a good preservative on its own, and combining it with sodium hydroxide helps it dissolve in products.
• Sodium benzoate does not occur naturally, but benzoic acid is found in many plants, including cinnamon, cloves, tomatoes, berries, plums, apples, and cranberries.

Additional Information

1) H 12D → H = 8; D = 4; hence 8 + 4 = 12

2) A5D → A = 1; D = 4; hence 1 + 4 = 5

3) C16L → C = 3; L = 12; hence 3 + 12 = 15 which is not equal to 16.

4) I22M → ​ I = 9; M = 13; hence 9 + 13 = 22.

Hence C16L is the odd one out.

Concept:

Pure virtual function:

• A pure virtual function is a virtual function that is required to be implemented by a derived class if derived class is not abstract.
• Base class containing pure virtual function becomes abstract.

Syntax of pure virtual function:

Virtual func_type func_name () = 0;

So option 4 is the correct answer.

Here the coding is,

So, the coding for SOUP is,

There are 4 library functions provided by C defined under header file to facilitate dynamic memory allocation in C programming. They are:

• malloc()
• calloc()
• free()
• realloc()