MCQOPTIONS
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MCQOPTIONS
This section includes 92 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Transition metal belong to |
| A. | s-block |
| B. | p-block |
| C. | d-block |
| D. | f-block |
| Answer» D. f-block | |
| 52. |
The element having lowest melting point in periodic table is |
| A. | Hg |
| B. | He |
| C. | W |
| D. | Cs |
| Answer» C. W | |
| 53. |
Which of the following is not a liquid elements ? |
| A. | Br |
| B. | Ga |
| C. | Fr |
| D. | Ca |
| Answer» E. | |
| 54. |
Alkali metal are in a group |
| A. | IIA |
| B. | VII A |
| C. | I A |
| D. | III A |
| Answer» D. III A | |
| 55. |
The total number of lanthanide elements is |
| A. | 8 |
| B. | 32 |
| C. | 14 |
| D. | 10 |
| Answer» D. 10 | |
| 56. |
Helogens belong to the |
| A. | s-block |
| B. | p-block |
| C. | d-block |
| D. | f-block |
| Answer» C. d-block | |
| 57. |
Elements of d-block are called |
| A. | Transition elements |
| B. | Transuranic elements |
| C. | Metals |
| D. | Metalloids |
| Answer» B. Transuranic elements | |
| 58. |
The elements in group zero called |
| A. | Alkali metals |
| B. | Transition metals |
| C. | Intert gases |
| D. | None |
| Answer» D. None | |
| 59. |
The first attempt to classify elements was made by |
| A. | Mendeleev |
| B. | New land |
| C. | Lother-mayer |
| D. | Dobereiner |
| Answer» B. New land | |
| 60. |
Aluminium is diagonally related to |
| A. | Li |
| B. | Be |
| C. | C |
| D. | B |
| Answer» C. C | |
| 61. |
The ligthest metal is |
| A. | Li |
| B. | Fe |
| C. | Cu |
| D. | Ag |
| Answer» B. Fe | |
| 62. |
Diagonal relationship is shown by |
| A. | Elements of 1st period |
| B. | Elements of 2nd period |
| C. | Elements of 3rd period |
| D. | None of these |
| Answer» C. Elements of 3rd period | |
| 63. |
The calculation of electronegativities was first done by |
| A. | Slater |
| B. | Pauling |
| C. | Bohr |
| D. | Mulliken |
| Answer» C. Bohr | |
| 64. |
In modern periodic table, the number of period is |
| A. | 2 |
| B. | 6 |
| C. | 7 |
| D. | 8 |
| Answer» D. 8 | |
| 65. |
The most electropositive amongst the alkaline earth metals is |
| A. | Beryllium |
| B. | Magnesium |
| C. | Barium |
| D. | Calcium |
| Answer» D. Calcium | |
| 66. |
Oxidation state of oxygen in hydrogen peroxide is |
| A. | -1 |
| B. | +1 |
| C. | zero |
| D. | -2 |
| Answer» B. +1 | |
| 67. |
In the reaction : |
| A. | Oxidation |
| B. | Reduction |
| C. | Simple dissolution |
| D. | Double decomposition |
| Answer» D. Double decomposition | |
| 68. |
The most common lanthanide is |
| A. | Lanthanum |
| B. | Cerium |
| C. | Plutonium |
| D. | Samarium |
| Answer» C. Plutonium | |
| 69. |
Which of the following pairs of elements is in the same period of the periodic table ? |
| A. | Na, Ca |
| B. | Na, Cl |
| C. | Ca, Cl |
| D. | Mg, Sb |
| Answer» C. Ca, Cl | |
| 70. |
Modern periodic law been given by |
| A. | Moseley |
| B. | Mendeleev |
| C. | Lother-Mayer |
| D. | Lavoisier |
| Answer» B. Mendeleev | |
| 71. |
Which one is known as father of periodic table ? |
| A. | Lavoisier |
| B. | Rutherford |
| C. | Mendeleev |
| D. | Bohr |
| Answer» D. Bohr | |
| 72. |
The electron affinity of chlorine is highest than that of fluorine due to |
| A. | its highest reactivity |
| B. | bigger size |
| C. | difference in their electronic configuration |
| D. | smaller nuclear charge |
| Answer» C. difference in their electronic configuration | |
| 73. |
Electron affinity of noble gases is |
| A. | Almost zero |
| B. | Low |
| C. | High |
| D. | Very high |
| Answer» B. Low | |
| 74. |
Which of the following pairs of atomic numbers, represent the elements belonging to the same group ? |
| A. | 15 and 13 |
| B. | 12 and 21 |
| C. | 14 and 31 |
| D. | 13 and 31 |
| Answer» E. | |
| 75. |
Aluminium bears a diagonal relationship with |
| A. | Beryllium |
| B. | Boron |
| C. | Carbon |
| D. | Gallium |
| Answer» B. Boron | |
| 76. |
Which one of the following sequence of the chemical elements is correct in terms of the descending order of atomic radius ? |
| A. | B - C- N - O |
| B. | C -B - O - N |
| C. | N - O - B - C |
| D. | O - N - C - B |
| Answer» B. C -B - O - N | |
| 77. |
Which noble gas does not have octet of electrons in its outer shell ? |
| A. | He |
| B. | Rn |
| C. | Ar |
| D. | None of these |
| Answer» B. Rn | |
| 78. |
Modern periodic table is based on atomic number of the elements. The significane of atomic number was proved by the experiment of |
| A. | Moseley's work on X-ray spectra |
| B. | Bragg's work on X-ray diffraction |
| C. | Mulliken's oil drop experiment |
| D. | Discovery of X-ray by Roentgen |
| Answer» B. Bragg's work on X-ray diffraction | |
| 79. |
Transition metals are often paramegnetic owing to |
| A. | High m.p and b.p |
| B. | The presence of vacant orbitals |
| C. | The presence of unpaired electrons |
| D. | Malleability an ductility |
| Answer» D. Malleability an ductility | |
| 80. |
All the elements is a group in the periodic table have the same |
| A. | Atomic weight |
| B. | Same number of valence electrons |
| C. | Atomic number |
| D. | None of the above |
| Answer» C. Atomic number | |
| 81. |
which has the highest electron affinity ? |
| A. | F |
| B. | CI |
| C. | Br |
| D. | I |
| Answer» C. Br | |
| 82. |
Which of the following pairs do not have diagonal relationship ? |
| A. | Be, Al |
| B. | Li, Mg |
| C. | B, Si |
| D. | Na, Mg |
| Answer» E. | |
| 83. |
In modern periodic table, the group number is |
| A. | 15 |
| B. | 16 |
| C. | 17 |
| D. | 18 |
| Answer» E. | |
| 84. |
Which element of the following does not exist in liquid state at room temperature ? |
| A. | Na |
| B. | Br |
| C. | Hg |
| D. | Ga |
| Answer» B. Br | |
| 85. |
Intert gases (Except Helium) comes in which block in the periodic table ? |
| A. | s-block |
| B. | d-block |
| C. | p-block |
| D. | None of these |
| Answer» D. None of these | |
| 86. |
Which of the following has zero electron affinity ? |
| A. | Nitrogen |
| B. | Oxygen |
| C. | Fluorine |
| D. | Neon |
| Answer» E. | |
| 87. |
Which block of elements are mostly metals with high B.P., M.P. values ? |
| A. | s-block |
| B. | d-block |
| C. | p-block |
| D. | can not be said |
| Answer» C. p-block | |
| 88. |
The horizontal line in modern periodic table is called |
| A. | Period |
| B. | Group |
| C. | Metal |
| D. | None |
| Answer» B. Group | |
| 89. |
In a period, the elements are arranged in the order of |
| A. | Constant charges in the nucleus |
| B. | Equal charges in the nucleus |
| C. | Decreasing charges in the nucleus |
| D. | Increasing charges in the nucleus |
| Answer» E. | |
| 90. |
Assertion : |
| A. | Both A and R are individually true and R is the correct explanation of A |
| B. | Both A and R are individually true but R is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» E. | |
| 91. |
Which has maximum conductivity ? |
| A. | Cu |
| B. | Na |
| C. | Mg |
| D. | Fe |
| Answer» B. Na | |
| 92. |
First of all the elements were classified by |
| A. | Lother Meyer |
| B. | Newland |
| C. | Mendeleev |
| D. | Dobereiner |
| Answer» C. Mendeleev | |