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