Question
A rectangular piece of copper foil of length 21 cm and
area 1386 cm2 is folded along its width to form a cylinder such that there is only one layer of copper foil on any part of the cylinder. What is the volume (in cm3) of the cylinder so formed?Solution
Width of the rectangular piece of copper foil = 1386/21 = 66 cm Since the foil is folded along its width to form a cylinder without any double layer, circumference of the cylinder formed = width of the rectangular foil Also, height of the cylinder so formed = length of the rectangular copper foil So, 2 × π × radius = 66 Radius of cylinder = 66 ÷ (2 × 22/7) = (66/44) × 7 = 10.5 cm So, volume of the cylinder so formed = π × (radius)2 × height = (22/7) × 10.5 × 10.5 × 21 = 7276.5 cm³
Temperature required for pasteurization is
During processing, foods can get contaminated because of:
a.   Equipments
b.   Labour
c.   Raw materials
Microorganism comes under the category of thermophiles is/are
Match the following mineral metabolism & their Disorders A to D
1. Phosphorus metabolism         A. Osteomalacia & Rickets
...
Which of the following statements is / are correct?
a.   Generation time is the time required by the cell to double its number
b....
Statement 1: There will be a shift of demand snacks, convenience food and organic and diet food. Statement 2: High taxation is a constraint for the food...
What is the full form of NOEL?
(i)Food components     (a ) Product of digestion
(ii) Carbohydrates       (b) fatty acid glycerol
(iii)Lysine  ...
The limiting amino acid in green vegetables is:
Which is biotechnological milestone?
