Question

1). According to Newlands theory, when elements are
arranged in the order of increasing atomic weight which
number element had similar properties to the first element.
(a) third
(6) seventh
(c) cighth
(d) sixth


2). Lothar Meyer plotted the physical properties such as atomic
volume, melting point and ...X... against atomic weight. Here,
X refers to
(a) mass
(b) boiling point
(c) surface tension (d) None of these

3) The most significant contribution towards the development
of periodic table was made by
(a) Mendelcev
(b) Avogadro
(c) Dalton
(d) Cavendish

4) Noble gases were included in Mendeleev's periodic table in
the
(a) 1st group
(b) 7th group
(c) 8th group
(d) None of these

5). Mendeleev classified elements in
(a) increasing order of atomic groups
(b) eight periods and cight groups
(c) seven periods and nine groups
(d) eight periods and seven groups

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Answer 1

Answer:

Here's the answer for u

Explanation:

1 - eight (c)

2 - mass (a)

3 - mendeleev (a)

4 - none of these (d) [AS THE ANS IS GROUP 0]

5 - d

HOPE IT HELPS

Answer 2

Answer:

answer of first question is eight-answer of second question is boiling point -answer of third question is cavendish-answer of forth question is none of these - answer of fifth question is option A