An atom has 7 electrons in its M-shell and contains 18 neutrons in its nucleus. What is its mass number?
The atom has 2 electrons in K, 8 electrons in L and 7 electrons in M = 2 + 8 + 7 = 17 and nucleus has 18 neutrons, so its mass number = (number of electrons + neutrons) = 17 + 18 = 35.
Scalping is also known as
What is the primary advantage of sprayers over manual application methods?
Red soil is generally poor in
For hybrid seed production_______ flowers are completely suppressed on female plants.
Which of the following is NOT a pest of paddy plant?
Choose the incorrect option
For each unit increase in pH the activity of Fe3+ decreases by:
In February, the Uttarakhand Cabinet approved “Uttarakhand Millet Mission”. This mission aims at promoting the state’s traditional grains like Man...
Movement of leaves of sensitive plant, Mimosa pudica are due to
In choosing between the two completing resources, the saving in the resource replaced must be greater than the cost of resource added. Which of the foll...