10th Class Science Periodic Classification of Elements Question Bank

done Periodic Classification of Elements Total Questions - 20

• question_answer1)
  Study the given table carefully.

  	Compounds	Colour change on adding China rose indicator
  (i)	Hydroxide of group 2 element	Magenta
  (ii)	Oxide of element (group 16 and period 3)	Magenta
  (iii)	Oxide of element (electronic configuration 2, 4)	Magenta
  (IV)	Hydroxide of element (at. no. 19)	Green
  (V)	Lime water	Magenta

  Which of the observations are correctly matched?
  A)
  (i), (ii) and (iv) only done clear
  B)
  (ii), (iii) and (iv) only done clear
  C)
  (ii), (iii) and (v) only done clear
  D)
  (i), (iii) and (iv) only done clear
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• question_answer2)
  Which of the elements having following positions, have same number of valence electrons as that of element with atomic number 6?

  (i) Group 14 and period 5

  (ii) Group 14 and period 4

  (iii) Group 6 and period 4

  (iv) Group 14 and period 3

   
  A)
  (i) and (ii) only done clear
  B)
  (i), (ii) and (iii) only done clear
  C)
  (i), (ii) and (iv) only done clear
  D)
  All of these done clear
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• question_answer3)

  Position of five elements P, Q, R, S and T is shown on the simplified form of the periodic table.

  The element which has maximum tendency to lose electron, the element which has maximum tendency to gain electrons and the element which has no tendency to gain or lose electrons are respectively

   
  A)
  P, R and S done clear
  B)
  S, R and T done clear
  C)
  Q, S and P done clear
  D)
  Q, R and T. done clear
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• question_answer4)
  Which of the following statements are incorrect?

  I. The atomic radii increase along a period from left to right.

  II. In periodic table isotopes are given separate places.

  III. The oxides of metals are basic in nature.

  IV. Na, Mg and Al belong to the same period.

   
  A)
  I and IV only done clear
  B)
  II and IV only done clear
  C)
  I and II only done clear
  D)
  III and IV only done clear
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• question_answer5)
  Following elements are present in the second period of the periodic table from left to right. Li, Be, B, C, N, O, F, Ne Few statements are given about these elements:

  (i) O and F exist as a monoatomic gases

  (ii) is the lightest element in the period

  (iii) B is a metalloid while C is a metal.

  (iv) Li and F react to form a compound LiF.

  The correct statements are
  A)
  (i) and (iii) only  done clear
  B)
  (ii) and (iv)only               done clear
  C)
  (ii) and (iii) only done clear
  D)
  (i) and (iv) only done clear
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• question_answer6)
  Read the given statements and mark the correct option.

  Statement 1: According to Dobereiner, when the three similar elements are arranged in the order of their increasing atomic weights the weight of the middle element is equal to the arithmetic mean of the other two elements.

  Statement 2: Atomic mass unit is equal to one twelfth of mass of a carbon atom.

   
  A)
  Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. done clear
  B)
  Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. done clear
  C)
  Statement 1 is true and statement 2 is false. done clear
  D)
  Both statements 1 and 2 are false. done clear
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• question_answer7)
  The ionization energies of elements U, V, W and X are 2480, 550, 950 and 1690 kJ mol-1 respectively. Which of the statements about these elements are correct?

  (i) V is a reactive metal.

  (ii) X is a reactive non-metal.

  (iii) U is a noble gas.

   
  A)
  (i) and (ii) only   done clear
  B)
  (ii) and (iii) only done clear
  C)
  (i) and (iii) only  done clear
  D)
  All of these done clear
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• question_answer8)
  Three elements P, Q and R have consecutive increasing atomic numbers. If Q is a noble gas then which of the following is correct about P and R?
  A)
  P and R belong to the same period of the periodic table. done clear
  B)
  P is a non-metal while R is a metal done clear
  C)
  P and R belong to same group of the periodic table. done clear
  D)
  None of these done clear
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• question_answer9)
  Which of the following properties cannot be predicted from the position of the elements in the periodic table?
  A)
  Nature of oxide done clear
  B)
  Formula of a particular compound done clear
  C)
  Total number of isotopes done clear
  D)
  Oxidizing or reducing nature done clear
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• question_answer10)
  To study the chemical properties, Mendeleev concentrated on the compounds formed by different elements with X and Y. Identify X and Y.
  A)

  X	Y
  Oxygen	Nitrogen

                  done clear
  B)

  X	Y
  Oxygen	Hydrogen

                  done clear
  C)

  X	Y
  Hydrogen	Nitrogen

                  done clear
  D)

  X	Y
  Hydrogen	Carbon

  done clear
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• question_answer11)
  Match column I with column II and mark the correct option from the codes given below.

  Column I	Column II
  (a) Highest electronegativity	(i) Caesium
  (b) Highest electron affinity	(ii) Ruthennium
  (c) Highest electropositivity	(iii) Fluorine
  (d) Highest oxidation number	(iv) Chlorine

   
  A)
  (a) - (i), (b) - (ii), (c) - (iii), (d) - (iv) done clear
  B)
  (a) - (ii), (b) - (iii), (c) - (iv), (d) - (i) done clear
  C)
  (a) - (iii), (b) - (iv), (c) - (i), (d) - (ii) done clear
  D)
  (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii) done clear
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• question_answer12)

  Element P belongs to first group and fourth period of the periodic table. Element Q succeeds P in the group and element R succeeds Q in the period.

  The correct increasing order of their atomic radii is

   
  A)
  Q < R < P done clear
  B)
  P < Q < R done clear
  C)
  P < R < Q done clear
  D)
  Cannot be predicted. done clear
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• question_answer13)
  Study the given flow chart carefully and fill in the blanks by choosing an appropriate option.
  A)

  (i) - Electron number,

  (ii) - Valency,

  (iii) - Oxidation number,

  (iv) - Electronegativity,

  (v) - Metallic character

    done clear
  B)

  (i) - Neutron number,

  (ii) - No. of electrons,

  (iii) - No. of valence electrons,

  (iv) - lionization energy,

  (v) - Non - metallic character

    done clear
  C)

  (i) - Proton number,

  (ii) - No. of electron shells,

  (iii) - No. of valence electrons,

  (iv) - Atomic radius,

  (v) - Metallic character

  done clear
  D)

  (i) - No. of electron shells,

  (ii) - No. of valence electrons,

  (iii) - No. of electron shells,

  (iv) - lionization energy,

  (v) - Non - metallic character

  done clear
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• question_answer14)
  The electron affinity of
  A)
  Carbon is greater than oxygen done clear
  B)
  Oxygen is greater than fluorine done clear
  C)
  Iodine is greater than bromine done clear
  D)
  Bromine is less than chlorine. done clear
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• question_answer15)
  The given table shows a part of the periodic table

  Groups\[\to \] Periods\[\downarrow \]	1	2	3 to 12	13	14	15	16	17	18
  2							Q		R
  3		P	S			T			U

  Identify P, Q, R, T and U respectively.
  A)

  Mg

  O

  Ne

  P

  Ar

  done clear
  B)

  O

  Mg

  Ar

  P

  Ne

                  done clear
  C)

  Mg

  O

  Ar

  P

  Ne

                  done clear
  D)

  O

  Mg

  Ne

  P

  Ar

  done clear
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• question_answer16)
  Electronic configurations of elements P, Q, R and S are given below :

  P : 2, 8, 1;	Q : 2, 5
  R : 2, 8, 7;	S : 2, 8, 5

  Which of the following statements are correct? Elements O and S belong to the same

  I. period of the periodic table.

  II. P is an alkali metal.

  III.  R is a metal.

  IV. Valency of element S is 3.

   
  A)
  I and II only       done clear
  B)
  II and IV only done clear
  C)
  I and III only     done clear
  D)
  All of these done clear
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• question_answer17)
  A brief information about elements W, X, Y and Z is given below:

  W : It has two electron shells both of which are completely filled.

  X : It has three electron shells in total and there are four electrons in the valence shell.

  Y : It has three electron shells in total and first and third shell have two electrons each.

  Z : It has twice as many electrons in its second shell as in its first shell and second shell is the valence shell.

  Identify W, X, Y and Z.
  A)

  W	X	Y	Z
  B	Al	N	Ne

                  done clear
  B)

  W	X	Y	Z
  Li	K	Ca	Si

                  done clear
  C)

  W	X	Y	Z
  Ne	Si	Mg	C

                  done clear
  D)

  W	X	Y	Z
  Na	Al	Si	Ne

  done clear
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• question_answer18)
  The given part of the periodic table represents period 3 containing elements a to h.

  Group	1	2	13	14	15	16	17	18
  Period 3	a	b	c	d	e	f	g	h

  Which of the following statements is/are correct?

  I. a and b form basic oxides while c forms amphoteric oxide.

  II. d is a typical non-metal.

  III. h exists in monoatomic form.

  IV. f is a non-metal.

   
  A)
  I only done clear
  B)
  II only done clear
  C)
  I and III only done clear
  D)
  I, III and IV only done clear
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• question_answer19)
  A brief information about the element X is given below :

  Element X	\[I{{E}_{1}}\]	\[I{{E}_{2}}\]	\[I{{E}_{3}}\]	\[I{{E}_{4}}\]
  	496 kJ/mol	4564 kJ/mol	6918 kJ/mol	9542 kJ/mol

  The formulae of the sulphate and chloride of element X are respectively
  A)
  \[XS{{O}_{4}}\] and \[XC{{l}_{2}}\] done clear
  B)
  \[X{{(S{{O}_{4}})}_{2}}\] and \[{{X}_{2}}Cl\] done clear
  C)
  \[{{X}_{2}}S{{O}_{4}}\] and\[XCl\] done clear
  D)
  \[XS{{O}_{4}}\] and \[{{X}_{2}}Cl\] done clear
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• question_answer20)
  The positions of four elements K, L, M and N in the periodic table are shown below:

  Group 13	Group 14	Group 15
  K	-	-
  -	L	-
  Eka-aluminium	M	N

  Which of the following statements about these elements are correct?

  I. K, L, M and N are all metalloids.

  II. K is a metal while L, M and N are non-metals.

  III. Among these four elements, K is smallest in size.

  IV. K is a metal, L and M are metalloids, N is a non-metal.

   
  A)
  Only II and III done clear
  B)
  Only I and III done clear
  C)
  Only III and IV done clear
  D)
  None of these. done clear
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