Question
An atom has 7 electrons in its M-shell and contains 18
neutrons in its nucleus. What is its mass number?Solution
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.
The Director of Public Instruction announced that all Government schools and colleges in the city would remain ……….. in view ….. the prevailing ...
A sentence has been given with a blank to be filled with an appropriate word. Choose the correct alternative.
She rubbed her hands over her arm...
They sat by the river bank with their legs ______ in the water.
It's just that case-hardened nit-pickers like me can't help _____________ these things.
The CRR cut will only benefit the banks and not the industry, which is suffering of high interest rates and slow demand.Â
This year’s drills were designed to inspect the mechanized units’ progress in their mobile combat capabilities and to further ____________ competit...
Select the most appropriate option to complete the sentence.
The committee did not acknowledge that he __________ wrong.
Each of the following sentences contains two blanks. Choose the most appropriate pair of words from the given options to fill in the blanks so that the...
The petitioner had __________ urgency in hearing as the petition ___________ issues affecting the fundamental rights, civil liberties of citizens and ev...
Fill in the blank with the most appropriate word.
I ______ an unopened letter lying on the mantelpiece.
