No. of questions - 27
Time - 15 min
Who gave the idea for the first time to classify elements as per their physical and chemical properties?
According to Dobereiner, group of three element is known as
Newland's law of octaves seemed to be true only for elements upto .
Mendeleev's periodic law states that:
Lothar Mayer curve was plotted between
Which shows the demerit of Mendeleev’s periodic table?
Which shows merit of Mendeleev’s periodic table?
How many elements were placed in VIII group of Mendelev’s periodic table ?
How many horizontal rows were there in Mendeleev's periodic classification?
The noble gases were placed in group of Mendeleev's classification?
What is/are the drawbacks of Mendeleev's periodic table?
In Modern Periodic Table, Henry Moseley observed regularities in the characteristic spectra.
Who showed that the atomic number is more fundamental property of an element than it’s atomic mass?
"Modern Periodic Law" is the modification of
According to Modern Periodic Law:
How many naturally occurring elements are there in periodic table?
The horizontal rows in modern periodic table are called
In which of the following, the elements having similar outer electronic configurations are arranged/placed?
The elements having similar chemical properties are placed in ?
How many periods are there in modern periodic table?
How many groups are there in modern periodic table?
The number of element present in first period of Modern periodic table is:
The number of elements present in the 2nd , 3rd , 4th , 5th and 6th periods respectively are:
Which was the incomplete period in the long form of the Modern period table?
Which of the following period of Modern periodic table contain lanthanoids?
Which of the following period of the long form of Modern periodic table contains Actinoid?
The number of lanthanoids and actinoid respectively present in the sixth and seventh periods are:
