Question
Which of the following is true about
isotopes?Solution
Isotopes are defined as elements having same number of protons and different number of neutrons. Since the number of protons is equal to the number of electrons. Therefore, number of electrons are also same in isotopes. Example of isotopes include hydrogen and deuterium. Hydrogen contains 1 proton, 1 neutron and 1 electron whereas deuterium contains 1 proton,2 neutrons and 1 electron. Hence, option B is correct.
In a certain language, the word CLOCK is written as 4 – 13 – 17 – 4 – 12. How will you write PHONE in the same language?
In a certain code, the word COMPAQ is written as DQNRBS and SONY is written as TQOA. In the same code, how is MOTOROLA written?
If '+' means '+', '–' means '+', '×' means '–', '÷' means '×', then what will come in place of the question mark (?) in the following equation?
Seven boxes – A, B, C, D, E, F and G are kept one above the other in stack. G is kept at the bottommost position. A is kept immediately above G. There...
Each vowel in the word TABLE is changed to the letter following it in the English alphabetical order and each consonant is changed to the letter precedi...
At half past 5 in the evening, the smaller angle between the hour & minute hands of a clock is:
'A + B' means 'A is brother of B'
'A – B' means 'A is mother of B'
'A × B' means 'A is husband of B'
'A ÷ B' means 'A is sister...
Six friends, C, E, G, I, K and M, are sitting around a circular table facing towards the centre and at equal distance from each other (not necessarily i...
Choose the odd one out:
Which letter-cluster will complete the given series?
BHERZ, DGHTX, FFKVV, _________
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