Horticulture - Study Mode

[#521] Commonly used preservative in tomato ketchup is
Correct Answer

(C) Benzoic acid

Explanation

Solution: The commonly used preservative in tomato ketchup is Benzoic acid . Benzoic acid, the simplest benzene-based carboxylic acid, has been known since the 16 th century. Its most common natural source is gum benzoin, a resin found in the bark of trees of the genus Styrax. It is a commonly used antimicrobial preservative in food and beverages, especially in carbonated beverages, as it presents its strongest antibacterial activity at pH 2.5 - 4.0. BA has inhibitory effects on the proliferation of bacteria and yeasts, a major cause of food spoilage. The concentration of benzoic acid in ketchup varied from 98.5 to 1284 mg kg -1 , with a mean value of 482 mg kg -1 .

[#522] Sodium benzoate is added for the preservation of fruit juice in the concentration of
Correct Answer

(B) 0.06 - 0.10%

Explanation

Solution: Sodium benzoate is added for the preservation of fruit juice in the concentration of 0.06 - 0.10%. Sodium benzoate and vitamin C can occur together in beverages such as fruit juice or soda, where these substances have been added to prevent spoilage and inhibit the growth of bacteria, moulds and yeast.

[#523] The upper stem of banana is called
Correct Answer

(C) Pseudostem

Explanation

Solution: The upper stem of a banana is called Pseudostem . The pseudostem is the part of the banana plant that looks like a trunk. It is formed by tightly packed overlapping leaf sheaths. The pseudostem is very fleshy and consists mostly of water, it is quite sturdy and can support a bunch that weighs 50 kg or more.

[#524] French Breakfast, Pusa Chetki, Arka Nishant and Bombay Red are the varieties of
Correct Answer

(B) Radish

Explanation

Solution: French Breakfast, Pusa Chetki, Arka Nishant and Bombay Red are the varieties of Radish . The radish is an edible root vegetable of the family Brassicaceae that was domesticated in Asia. As these are easy to grow and quick to harvest, radishes are often planted by novice gardeners. Pusa Chetki is developed by IARI, New Delhi through selection from the germplasm of Denmark.

[#525] Arka Pink star is a variety of
Correct Answer

(A) Chrysanthemum

Explanation

Solution: Arka Pink star is a variety of Chrysanthemum . It is the flowering plant of the genus chrysanthemum in the family Asteraceae. Flowers are semi-double with pink colour, yield 135.26 flowers/plant. It is a dwarf with an early flowering character.