MCQOPTIONS
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MCQOPTIONS
This section includes 11242 Mcqs, each offering curated multiple-choice questions to sharpen your Joint Entrance Exam - Main (JEE Main) knowledge and support exam preparation. Choose a topic below to get started.
| 6101. |
Beryllium resembles much with [CPMT 1988] |
| A. | \[Zn\] |
| B. | \[Al\] |
| C. | \[Li\] |
| D. | \[Ra\] |
| Answer» C. \[Li\] | |
| 6102. |
In the periodic table going down in fluorine group [CPMT 1981] |
| A. | Reactivity will increase |
| B. | Electronegativity will increase |
| C. | Ionic radius will increase |
| D. | Ionization potential will increase |
| Answer» D. Ionization potential will increase | |
| 6103. |
The element X, Y, Z and T have the indicated electronic configurations. Starting with the innermost shell, which is the most metallic element [CPMT 1979, 93] |
| A. | \[X=2,\,8,\,4\] |
| B. | \[Y=2,\,8,\,8\] |
| C. | \[Z=2,\,8,\,8,\,1\] |
| D. | \[T=2,\,8,\,8,\,7\] |
| Answer» D. \[T=2,\,8,\,8,\,7\] | |
| 6104. |
Elements after atomic number 103 have been discovered till now. If an element with atomic number 106 were ever discovered which of the following electronic configuration will it possess [AIIMS 1982] |
| A. | \[[Rn]\,5{{f}^{14}}\,6{{d}^{4}}\,7{{s}^{2}}\] |
| B. | \[[Rn]\,5{{f}^{14}}\,6{{d}^{5}}7{{s}^{1}}\] |
| C. | \[[Rn]\,5{{f}^{14}}\,6{{d}^{6}}\,7{{s}^{0}}\] |
| D. | \[[Rn]\,5{{f}^{14}}\,6{{d}^{1}}\,7{{s}^{2}}\,7{{p}^{3}}\] |
| Answer» C. \[[Rn]\,5{{f}^{14}}\,6{{d}^{6}}\,7{{s}^{0}}\] | |
| 6105. |
As per the modern periodic law, the physical and chemical properties of elements are periodic functions of their [RPMT 1997; EAMCET 1998] |
| A. | Atomic volume |
| B. | Electronic configuration |
| C. | Atomic weight |
| D. | Atomic size |
| Answer» C. Atomic weight | |
| 6106. |
Hydrogen by donating one electron forms \[{{H}^{+}}\]. In this property, it resembles with |
| A. | Transitional metals |
| B. | Alkaline earth metals |
| C. | Alkali metals |
| D. | Halogens |
| Answer» D. Halogens | |
| 6107. |
Dobereiner traids is [RPMT 1997] |
| A. | \[Na\], \[K\], \[Rb\] |
| B. | \[Mg,\]\[S,\]\[As\] |
| C. | \[Cl\], \[Br,I\] |
| D. | \[P,\]\[S,\], \[As\] |
| Answer» D. \[P,\]\[S,\], \[As\] | |
| 6108. |
Which of the following pair has elements containing same number of electrons in the outermost orbit [Kurukshetra CEE 1998; AFMC 2000] |
| A. | \[N\], \[O\] |
| B. | \[Na\], \[Ca\] |
| C. | \[As\], \[Bi\] |
| D. | \[Pb\], \[Sb\] |
| Answer» D. \[Pb\], \[Sb\] | |
| 6109. |
On going left to right in a period, in transition metals, their atomic volumes [MP PMT 2003] |
| A. | Decrease |
| B. | Increase |
| C. | Remain same |
| D. | None of these of correct |
| Answer» B. Increase | |
| 6110. |
Lithium shows similarities to magnesium in its chemical behaviour because [AFMC 2000] |
| A. | Similar size, same electronegativity and lower polarizing power |
| B. | Similar size, greater electronegativity and similar polarizing power |
| C. | Similar size, same electronegativity and similar high polarizing power |
| D. | None of these |
| Answer» D. None of these | |
| 6111. |
Which of the following statement is not correct regarding hydrogen atom [AIIMS 2000] |
| A. | It resembles halogens in some properties |
| B. | It resembles alkali metals in some properties |
| C. | It can be placed in 7th group of periodic table |
| D. | It can not be placed in first group of periodic table |
| Answer» E. | |
| 6112. |
Which of the following is the atomic number of a metal [AIIMS 2000] |
| A. | 32 |
| B. | 34 |
| C. | 36 |
| D. | 38 |
| Answer» E. | |
| 6113. |
If the atomic number of an element is 33, it will be placed in the periodic table in the [RPET 1999; UPSEAT 2001, 02] |
| A. | First gp |
| B. | Third gp |
| C. | Fifth gp |
| D. | Seventh gp |
| Answer» D. Seventh gp | |
| 6114. |
An element has electronic configuration \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{4}}\]. Predict their period, group and block [CPMT 2000] |
| A. | Period = 3rd, block = p, group = 16 |
| B. | Period = 5th, block = s, group = 1 |
| C. | Period = 3rd, block = p, group = 10 |
| D. | Period = 4th, block = d, group = 12 |
| Answer» B. Period = 5th, block = s, group = 1 | |
| 6115. |
The electronic configuration of halogen is [MP PET/PMT 1998; Pb. PMT 2001] |
| A. | \[n{{s}^{2}}n{{p}^{6}}\] |
| B. | \[n{{s}^{2}}n{{p}^{3}}\] |
| C. | \[n{{s}^{2}}n{{p}^{5}}\] |
| D. | \[n{{s}^{2}}\] |
| Answer» D. \[n{{s}^{2}}\] | |
| 6116. |
Which of the following dinegative anion is quite common [CPMT 2000] |
| A. | \[{{S}^{2-}}\] |
| B. | \[S{{e}^{2-}}\] |
| C. | \[T{{e}^{2-}}\] |
| D. | \[{{O}^{2-}}\] |
| Answer» E. | |
| 6117. |
Which of the following show diagonal relationship [KCET 2003; MP PMT 2003] |
| A. | B and Si |
| B. | B and Al |
| C. | B and Ga |
| D. | B and C |
| Answer» B. B and Al | |
| 6118. |
An element has the electronic configuration \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},\] \[3{{s}^{2}}3{{p}^{6}}3{{d}^{5}},\,4{{s}^{1}}\]. It is a |
| A. | s-block element |
| B. | p-block element |
| C. | d-block element |
| D. | Inert gas |
| Answer» D. Inert gas | |
| 6119. |
The element with atomic number 36 belongs to ?? block in the periodic table [KCET 2003] |
| A. | p |
| B. | s |
| C. | f |
| D. | d |
| Answer» B. s | |
| 6120. |
According to the periodic law of elements, the variation in properties of elements is related to their [AIEEE 2003] |
| A. | Atomic masses |
| B. | Nuclear masses |
| C. | Atomic numbers |
| D. | Nuclear neutron-proton number |
| Answer» D. Nuclear neutron-proton number | |
| 6121. |
The elements having the electronic configuration, [\[Kr\]] \[4{{d}^{10}}{{f}^{14}},\,5{{s}^{2}}{{p}^{6}}{{d}^{2}},\,6{{s}^{2}}\] belongs to [CPMT 1982] |
| A. | s-block |
| B. | p-block |
| C. | d-block |
| D. | f-block |
| Answer» D. f-block | |
| 6122. |
All the s-block elements of the periodic table are placed in the groups ? [Orissa JEE 2002] |
| A. | IA and IIA |
| B. | IIIA and IVA |
| C. | B sub groups |
| D. | VA to VIIA |
| Answer» B. IIIA and IVA | |
| 6123. |
Mendeleef's periodic law is based on |
| A. | Atomic weight |
| B. | Atomic number |
| C. | Number of neutrons |
| D. | None of the above |
| Answer» B. Atomic number | |
| 6124. |
Which of the following elements is a lanthanide (Rare-earth element) [Manipal MEE 1995] |
| A. | Cadmium |
| B. | Californium |
| C. | Cerium |
| D. | Cesium |
| Answer» D. Cesium | |
| 6125. |
Elements of atomic number 6 is placed in [CPMT 1978] |
| A. | IV group |
| B. | IV period |
| C. | VI group |
| D. | III group |
| Answer» B. IV period | |
| 6126. |
The elements with atomic number 10, 18, 36, 54 and 86 are all [CPMT 1976] |
| A. | Light metals |
| B. | Inert gases |
| C. | Halogens |
| D. | Rare-earths |
| Answer» C. Halogens | |
| 6127. |
The electronic structure \[(n-1)\,{{d}^{1-10}}n{{s}^{0-2}}\] is characteristic of [CET Pune 1998] |
| A. | Transition elements |
| B. | Lanthanides |
| C. | Actinides |
| D. | Rare gases |
| Answer» B. Lanthanides | |
| 6128. |
If an atom has electronic configuration \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{3}}4{{s}^{2}},\] it will be placed in [CBSE PMT 2002] |
| A. | Second group |
| B. | Third group |
| C. | Fifth group |
| D. | Sixth group |
| Answer» D. Sixth group | |
| 6129. |
An element of atomic number 29 belongs to [CPMT 1991; Kurukshetra CEE 1991; MP PET 2001] |
| A. | \[s\]-block |
| B. | \[p\]-block |
| C. | \[d\]-block |
| D. | \[f\]-block |
| Answer» D. \[f\]-block | |
| 6130. |
Which one of the following belongs to representative group of elements in the periodic table [Kurukshetra CEE 1991] |
| A. | Lanthanum |
| B. | Argon |
| C. | Chromium |
| D. | Aluminium |
| Answer» E. | |
| 6131. |
The telluric helix was given by [AFMC 1990] |
| A. | De Chan Courtois |
| B. | Newlands |
| C. | L. Meyer |
| D. | Mendeleef |
| Answer» B. Newlands | |
| 6132. |
The long form of periodic table has [CPMT 1986; KCET 1998] |
| A. | Eight horizontal rows and seven vertical columns |
| B. | Seven horizontal rows and eighteen vertical columns |
| C. | Seven horizontal rows and seven vertical columns |
| D. | Eight horizontal rows and eight vertical columns |
| Answer» C. Seven horizontal rows and seven vertical columns | |
| 6133. |
The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups [NCERT 1982] |
| A. | Both are found together in nature |
| B. | Both have nearly the same size |
| C. | Both have similar electronic configuration |
| D. | The ratio of their charge to size is nearly the same |
| Answer» E. | |
| 6134. |
?The 6 properties of the elements are periodic function of their atomic numbers.? The statement was given by [MNR 1995] |
| A. | N. Bohr |
| B. | J.W. Dobereiner |
| C. | D.I. Mendeleef |
| D. | H.G.J. Moseley |
| Answer» E. | |
| 6135. |
The atomic number of an element is derived from [Kerala PMT 2004] |
| A. | Number of electrons |
| B. | Number of protons |
| C. | Number of neutrons |
| D. | Number of isotopes |
| E. | Number of nucleons |
| Answer» C. Number of neutrons | |
| 6136. |
The elements with atomic numbers 9, 17, 35, 53, 85 are all [KCET 2004] |
| A. | Noble gases |
| B. | Halogens |
| C. | Heavy metals |
| D. | Light metals |
| Answer» C. Heavy metals | |
| 6137. |
The metal-having highest melting point is [AMU 2002] |
| A. | Chromium |
| B. | Tungston |
| C. | Diamond |
| D. | Silver |
| Answer» C. Diamond | |
| 6138. |
Which of the following has smallest bond angle [AMU 2002] |
| A. | \[{{H}_{2}}O\] |
| B. | \[N{{H}_{3}}\] |
| C. | \[C{{H}_{4}}\] |
| D. | \[C{{O}_{2}}\] |
| Answer» B. \[N{{H}_{3}}\] | |
| 6139. |
Which of the following doesn?t decompose on heating [AMU 2002] |
| A. | \[MgC{{O}_{3}}\] |
| B. | \[N{{a}_{2}}C{{O}_{3}}\] |
| C. | \[L{{i}_{2}}C{{O}_{3}}\] |
| D. | \[Ca\,{{(HC{{O}_{3}})}_{2}}\] |
| Answer» C. \[L{{i}_{2}}C{{O}_{3}}\] | |
| 6140. |
Group comprising of all metals is [RPET 2000] |
| A. | IIIA |
| B. | IVA |
| C. | VIIA |
| D. | IIA |
| Answer» E. | |
| 6141. |
From which of the following the hydration energy of \[M{{g}^{2+}}\] is larger [MP PET 2000] |
| A. | \[N{{a}^{+}}\] |
| B. | \[A{{l}^{3+}}\] |
| C. | \[B{{e}^{2+}}\] |
| D. | \[C{{r}^{3+}}\] |
| Answer» B. \[A{{l}^{3+}}\] | |
| 6142. |
As we go from left to right in period two of the periodic table, gram atomic volume of the elements |
| A. | Will change indefinitely |
| B. | Increases at a constant rate |
| C. | First increases then decrease |
| D. | Decreases |
| Answer» E. | |
| 6143. |
Atomic number of elements represent |
| A. | Number of protons in the nucleus |
| B. | Number of neutrons in the nucleus |
| C. | Number of protons and neutrons in nucleus |
| D. | The valency of an element |
| Answer» B. Number of neutrons in the nucleus | |
| 6144. |
The electronic configuration of an element is \[1{{s}^{2}},\,2{{s}^{2}}\,2{{p}^{6}},\,3{{s}^{2}}\,3{{p}^{3}}\]. What is the atomic number of the element which is just below the above element in the periodic table [CBSE PMT 1995] |
| A. | 33 |
| B. | 34 |
| C. | 31 |
| D. | 49 |
| Answer» B. 34 | |
| 6145. |
Which of these dose not reflect the periodicity of the elements [UPSEAT 2001; BIT 1990; MP PMT 2001] |
| A. | Bonding behaviour |
| B. | Electronegativity |
| C. | Ionization energy |
| D. | Neutron/proton ratio |
| Answer» E. | |
| 6146. |
Which of the following statement is not correct for the element having electronic configuration \[1{{s}^{2}},2{{s}^{2}}{{p}^{6}},\,3{{s}^{1}}\] |
| A. | It is a monovalent electropositive |
| B. | It forms basic oxide |
| C. | It is a non-metal |
| D. | It has low electron affinity |
| Answer» D. It has low electron affinity | |
| 6147. |
For the reaction \[PC{{l}_{3}}(g)+C{{l}_{2}}(g)\] ⇌ \[PC{{l}_{5}}(g)\] the position of equilibrium can be shifted to the right by [MP PMT 2004] |
| A. | Increasing the temperature |
| B. | Doubling the volume |
| C. | Addition of \[C{{l}_{2}}\] at constant volume |
| D. | Addition of equimolar quantities of \[PC{{l}_{3}}\]and \[PC{{l}_{5}}\] |
| Answer» D. Addition of equimolar quantities of \[PC{{l}_{3}}\]and \[PC{{l}_{5}}\] | |
| 6148. |
If a system is at equilibrium the rate of forward to the reverse reaction is [UPSEAT 2004] |
| A. | Less |
| B. | Equal |
| C. | High |
| D. | At equilibrium |
| Answer» C. High | |
| 6149. |
In the chemical reaction \[{{N}_{2}}+3{{H}_{2}}\]⇌\[2N{{H}_{3}}\] at equilibrium point, state whether [NCERT 1977] |
| A. | Equal volumes of \[{{N}_{2}}\] and \[{{H}_{2}}\] are reacting |
| B. | Equal masses of \[{{N}_{2}}\] and \[{{H}_{2}}\] are reacting |
| C. | The reaction has stopped |
| D. | The same amount of ammonia is formed as is decomposed into \[{{N}_{2}}\] and \[{{H}_{2}}\] |
| Answer» E. | |
| 6150. |
A chemical reaction is at equilibrium when [NCERT 1975; CPMT 1974; MP PMT 1996; KCET 1993; IIT 1978; Manipal MEE 1995; Pb. PMT 2002] |
| A. | Reactants are completely transformed into products |
| B. | The rates of forward and backward reactions are equal |
| C. | Formation of products is minimised |
| D. | Equal amounts of reactants and products are present |
| Answer» C. Formation of products is minimised | |