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