Question
A neutral atom has 9 electrons and mass number is 19.
What is the number of neutrons in the atom?Solution
Mass number of an atom is defined as the sum of protons and neutrons present in the nucleus. Since, the number of electrons are 9 and the atom is neutrons, therefore number of protons will also be equal to 9. Mass number is equal to protons + neutrons=19. Putting protons as 9, we get number of neutrons as 10. Hence, option B is correct.Â
Directions: In each question below, word is used in four different ways. Choose the option in which the usage of the word is INCORRECT or INAPPROPRIATE....
- Below a word is given in three sentences. Find out which one/ones make/makes a correct usage of the given word and mark the option accordingly. If the sent...
A word/phrase has been given in the question and used in the sentences
below. Identify the statements where the word has been used in a contex...
In the following question, a word has been given and there are three ways in which the word has been used, in similar or different forms. You need to s...
- In each of the following questions, a word has been used in sentences in THREE different ways. Choose the option corresponding to the sentences in which th...
Select the correct synonym of the given word.
Scintillating
In each of the following questions, a word has been given and used in three statements. You are supposed to identify which of the statements/s use/s th...
In the question below, a sentence is given, four words have been highlighted in bold. Find out if the words are appropriate (grammatically and context...
In each of the questions given below, two phrases in a sentence are highlighted which may or may not be correctly used. From the given choices...
In the given question, a word has been given and there are three ways in which the word has been used, in similar or different forms. You need to see w...
Relevant for Exams:
