oxygen uses

To Demonstrate Aerobic Respiration The apparatus shown is called the respiroscope that is used to demonstrate respiration. Few germinating seeds are taken in the bulb of the respirometer. The tube is inserted into a beaker containing mercury. A pellet of KOH is introduced into the set..

Oxygen has varied industrial and scientific uses. Oxygen (or dioxygen) is used in steel making It is also used in oxy-hydrogen and oxy-acetylene welding torches. Oxygen is used as an oxidizer in rocket propellants and in..

Compare - 7 and 2, using a number line. => - 2 > 7 or It can not be compared because one is positive and other is negative or - 7 < 2 or - 7 > 2..

Find 2 × 28 using the array shown. => 30 or 18 or 20 or 56..

Identify the temperature shown using o C. => 65 o C or 75 o C or 85 o C or 70 o C..

Read the temperature shown in the figure using o F. => - 3 o F or 7 o F or - 10 o F or 10 o F..

Write the prime factorization of 5 × 2 × 2 using exponents. => 5 1 × 2 2 or 5 2 × 2 3 or 5 2 × 2 1 or 5 1 × 2 1..

Find the circumference of the circle with radius 2 cm. [Use π = 3.14] => 12.56 cm or 25.12 cm or 6.28 cm or 12 cm..

Compare the integers - 5 and 2 using number line. => -5 < 2 or 5 < 2 or -5 > 2 or None of the above..

There were 15 spoons on the table. George used 2 of them. Choose a number sentence to find the remaining spoons. => 15 - 2 = 12 or 15 - 2 = 14 or 15 - 2 = 13 or 15 - 2 = 11..