No. of questions - 27
Time - 15 min
1.
The elements having similar chemical properties are placed in ?
2.
Who showed that the atomic number is more fundamental property of an element than it’s atomic mass?
3.
How many groups are there in modern periodic table?
4.
What is/are the drawbacks of Mendeleev's periodic table?
5.
According to Dobereiner, group of three element is known as
6.
The number of lanthanoids and actinoid respectively present in the sixth and seventh periods are:
7.
The number of element present in first period of Modern periodic table is:
8.
How many periods are there in modern periodic table?
9.
In which of the following, the elements having similar outer electronic configurations are arranged/placed?
10.
Which of the following period of Modern periodic table contain lanthanoids?
11.
Lothar Mayer curve was plotted between
12.
In Modern Periodic Table, Henry Moseley observed regularities in the characteristic spectra.
13.
Who gave the idea for the first time to classify elements as per their physical and chemical properties?
14.
According to Modern Periodic Law:
15.
Which shows merit of Mendeleev’s periodic table?
16.
Which shows the demerit of Mendeleev’s periodic table?
17.
Newland's law of octaves seemed to be true only for elements upto .
18.
The number of elements present in the 2nd , 3rd , 4th , 5th and 6th periods respectively are:
19.
How many horizontal rows were there in Mendeleev's periodic classification?
20.
The horizontal rows in modern periodic table are called
21.
How many naturally occurring elements are there in periodic table?
22.
Mendeleev's periodic law states that:
23.
Which was the incomplete period in the long form of the Modern period table?
24.
The noble gases were placed in group of Mendeleev's classification?
25.
How many elements were placed in VIII group of Mendelev’s periodic table ?
26.
Which of the following period of the long form of Modern periodic table contains Actinoid?
27.
"Modern Periodic Law" is the modification of
