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