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question_answer1)
What is the valency of an element that has atomic number 12?
A)
1 done
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B)
2 done
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C)
3 done
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D)
4 done
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E)
None of these done
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question_answer2)
Which of the following metals is most reactive?
A)
Li done
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B)
Na done
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C)
K done
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D)
Rb done
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E)
None of these done
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question_answer3)
Which of the following groups of periodic table does an element belong, if it has an atomic number of 10?
A)
1 done
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B)
2 done
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C)
18 done
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D)
17 done
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E)
None of these done
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question_answer4)
Which of the following two elements have similar chemical properties?
A)
Element with atomic number 3 and element with atomic number 11 done
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B)
Element with atomic number 3 and element with atomic number 9 done
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C)
Element with atomic number 11 and element with atomic number 9 done
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D)
Both [b] and [c] done
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E)
None of these done
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question_answer5)
Which of the following is true about an element that has an atomic numbers of 15?
A)
Element belongs to group 5. done
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B)
Element has a valency of 3. done
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C)
Element is a non-metal. done
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D)
Both [b] and [c] done
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E)
None of these done
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question_answer6)
Which of the following is true about an element if it has an atomic number of 10?
A)
It is a metal done
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B)
It is a non-metal done
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C)
It is a noble gas done
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D)
All the above done
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E)
None of these done
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question_answer7)
Which of the following is true about an element that belongs to the group 1 of the periodic table?
A)
It is a metal. done
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B)
It is a non-metal. done
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C)
It is a noble gas. done
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D)
Both [b] and [c] done
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E)
None of these done
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question_answer8)
Which of the following elements is very stable?
A)
Ca done
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B)
O done
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C)
Ar done
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D)
Be done
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E)
None of these done
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question_answer9)
What kind of bond will be formed between elements, if one of them belongs to group 16 and another belongs to group 14?
A)
Ionic bond done
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B)
Covalent bond done
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C)
Coordinate bond done
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D)
No bonding will take place done
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E)
None of these done
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question_answer10)
Which of the following is true, if element of group 2 of periodic table reacts with the element of group 17?
A)
The compound formed conducts electricity done
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B)
Ionic bonding takes place to form the compound done
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C)
No bonding will take place done
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D)
Both [a] and [b] done
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E)
None of these done
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question_answer11)
An element magnesium reacts with sulphur to form:
A)
Ionic bond done
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B)
Covalent bond done
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C)
Coordinate bond done
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D)
All the above done
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E)
None of these done
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question_answer12)
"Law of octaves" was given by:
A)
Mendeleev done
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B)
Newland done
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C)
Dobereiner done
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D)
Moseley done
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E)
None of these done
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question_answer13)
Which one of the following is correct for an element with atomic number 24?
A)
It is a non-mental. done
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B)
It is a metal. done
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C)
It forms ionic bond with oxygen. done
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D)
Both [b] and [c] done
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E)
None of these done
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question_answer14)
Elements lying in a group:
A)
Contain the same number of valence electrons. done
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B)
Have the same atomic size. done
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C)
Have same electronic configuration. done
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D)
All the above done
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E)
None of these done
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question_answer15)
In the modern periodic table, sulphur (atomic number 16) is surrounded by elements with atomic number 8, 15 and 17? Which of these have physical and chemical properties resembling sulphur?
A)
Element with atomic no. 8 done
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B)
Element with atomic number 15 done
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C)
Element atomic number 17 done
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D)
All the above done
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E)
None of these done
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question_answer16)
Which of the following is correct for Mendeleev's classification of element;
A)
Mendeleev's periodic table was based on atomic number. done
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B)
There were eight periods and seven groups in the periodic table. done
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C)
Mendeleev's periodic table could accommodate noble gases when they we discovered. done
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D)
All the above done
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E)
None of these done
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question_answer17)
Which of the following is the present basis for the classification of element
A)
Atomic mass of elements done
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B)
Atomic number of elements done
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C)
Physical state of elements done
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D)
Valency of elements done
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E)
None of these done
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question_answer18)
Which one of the following metalloids is used to make chips, used in laptop
A)
Boron done
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B)
Silicon done
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C)
Polonium done
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D)
All the above done
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E)
None of these done
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question_answer19)
Down the group atomic size of elements:
A)
Decreases done
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B)
Increases done
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C)
Remain same done
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D)
Either [a] or [b] done
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E)
None of these done
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question_answer20)
Modern periodic table was prepared by ____.
A)
Mendeleev done
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B)
Bohr done
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C)
Newland done
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D)
Dobereiner done
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E)
None of these done
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question_answer21)
Which one of the following statements is correct for the nature of oxides when we move in periods from left to right in the modem periodic table?
A)
The basic nature of oxides decreases and the acidic nature of oxides increases. done
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B)
The acidic nature of oxides decreases and the basic nature of oxides increases. done
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C)
No change in the nature of oxides of elements. done
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D)
Either [b] or [c] done
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E)
None of these done
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question_answer22)
Which one element among the following will have maximum metallic character? Na. Mg, Al, Si
A)
Si done
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B)
Mg done
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C)
Al done
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D)
Na done
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E)
None of these done
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question_answer23)
Match the following:
Column A | Column B |
(i) 2. 8, 3 | [A] Group 18 |
(ii) 2,8 | [B] Group 2 |
(iii) 2, 8, 2 | [C] Group 13 |
(iv) 2,4 | [D] Group 14 |
A)
(i- C), (ii - D), (iii - A), (iv - B) done
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B)
(i- D), (ii - C), (iii - B), (iv - A) done
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C)
(i- C), (ii - A), (iii - B), (iv - D) done
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D)
(i - C), (ii - D), (iii - A), (iv - B) done
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E)
None of these done
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question_answer24)
The correct electronic configuration of element with atomic number 28 is:
A)
2, 8, 18 done
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B)
2, 8, 16, 2 done
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C)
2, 6, 8, 12 done
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D)
2, 18, 8 done
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E)
None of these done
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question_answer25)
Newland's law of octave was applicable to the classification of elements up to:
A)
As done
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B)
Ca done
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C)
Cr done
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D)
Zn done
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E)
None of these done
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question_answer26)
On moving from top to bottom in a group, which of the following characters increases?
(i) Atomic size |
(ii) Metallic character |
(iii) Acidic nature of oxides |
(iv) Valence electrons |
A)
(i) and (ii) done
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B)
(ii) and (iii) done
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C)
(i) and (iii) done
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D)
(iii) and (iv) done
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E)
None of these done
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question_answer27)
Which one of the following is not a configuration of a noble gas?
A)
2, 8, 18, 8 done
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B)
2, 8, 18, 2 done
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C)
2, 8 done
clear
D)
2, 8, 18, 18, 8 done
clear
E)
None of these done
clear
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question_answer28)
Arrange the given elements in the decreasing order of their atomic radii: Mg, Ca, Be, Sr, Ba
A)
\[Sr>\,Ba>\,Ca>\,Mg>\,Be\] done
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B)
\[Ba>\,Sr>\,Ca>\,Mg>\,Be\] done
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C)
\[Be>\,Sr>\,Ba>\,Mg>\,Ca\] done
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D)
\[Ba>\,Sr>\,Ca>\,Be>\,Mg\] done
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E)
None of these done
clear
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question_answer29)
Which one of the following is strongly acidic?
A)
\[N{{a}_{2}}O\] done
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B)
\[MgO\] done
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C)
\[S{{O}_{2}}\] done
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D)
\[A{{l}_{2}}{{O}_{3}}\] done
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E)
None of these done
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question_answer30)
Which one of the following is the most non-metallic element?
A)
Ar done
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B)
Cl done
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C)
P done
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D)
S done
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E)
None of these done
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question_answer31)
Moving down the group from Li to Cesium the electropositive character of element:
A)
Decreases done
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B)
Increases done
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C)
Remains same done
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D)
Either [a] or [b] done
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E)
None of these done
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question_answer32)
Direction for given below. The electronic configuration of three elements P, Q and R are given below.
P : 2 8 3 |
Q : 2, 7 |
R : 2 8 1 |
Which element belongs to third period?
A)
P and Q done
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B)
Q and R done
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C)
P and R done
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D)
Q only done
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E)
None of these done
clear
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question_answer33)
Direction for given below. The electronic configuration of three elements P, Q and R are given below.
P : 2 8 3 |
Q : 2, 7 |
R : 2 8 1 |
Which element belongs to group 17?
A)
P done
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B)
Q done
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C)
R done
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D)
Both P and R done
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E)
None of these done
clear
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question_answer34)
The valency of the element whose atomic number is 19 is:
A)
7 done
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B)
1 done
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C)
2 done
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D)
9 done
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E)
None of these done
clear
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question_answer35)
Match the following:
Column A | Column B |
(i) Group 16 | [A] Ga |
(ii) Group 14 | [B] Ca |
(iii) Group 2 | [C] C |
(iv) Group 13 | [D] S |
A)
(i - C), (ii - D), (iii - A), (iv - B) done
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B)
(i - D), (ii - C), (iii - A), (iv - B) done
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C)
(i - D), (ii - C), (iii - B), (iv - A) done
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D)
(i - D), (ii - B), (iii - A), (iv - C) done
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E)
None of these done
clear
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question_answer36)
An element R belongs to group XV of the periodic table. The formula of oxide of this element will be:
A)
\[{{R}_{2}}O\] done
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B)
\[RO\] done
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C)
\[{{R}_{2}}{{O}_{3}}\] done
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D)
\[{{R}_{2}}{{O}_{5}}\] done
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E)
None of these done
clear
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question_answer37)
Electron affinity can be defined as:
A)
The energy given out when an extra electron is added to a neutral isolate atom. done
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B)
The energy required to knock out an electron from an isolated gaseous atom or ion. done
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C)
The number of electrons in the outermost shell. done
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D)
The number of valence electrons in the outer most shell of the element. done
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E)
None of these done
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question_answer38)
Which of the following statements is incorrect when we are going from left to right across the periods of periodic table?
A)
The atoms lose their electrons more easily. done
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B)
The elements become less metallic in nature. done
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C)
The oxides become more acidic. done
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D)
The number of valence electrons increases. done
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E)
None of these done
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question_answer39)
The period number of an element in the periodic table gives the:
A)
Number of valence electrons in the outermost shell. done
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B)
Number of shells in an atom of the element. done
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C)
Atomic number of the element done
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D)
All the above done
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E)
None of these done
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question_answer40)
Halogens belong to:
A)
Group 18 done
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B)
Group 14 done
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C)
Group 2 done
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D)
5 done
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E)
None of these done
clear
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