MCQOPTIONS
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MCQOPTIONS
This section includes 402 Mcqs, each offering curated multiple-choice questions to sharpen your UPSEE knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
The ionic compounds are in water |
| A. | soluble |
| B. | insoluble |
| C. | polar |
| D. | non-polar |
| Answer» B. insoluble | |
| 102. |
Electron affinity of carbon atom is |
| A. | −126 |
| B. | −123 |
| C. | −125 |
| D. | −124 |
| Answer» C. −125 | |
| 103. |
The compound which is formed by linear overlapping creating sigma bonds only is |
| A. | methane |
| B. | ethene |
| C. | propane |
| D. | butane |
| Answer» B. ethene | |
| 104. |
Distance between potassium chloride is equal to sum of radii of two ions, it is determined by |
| A. | Rutherford |
| B. | Bohar |
| C. | Alberuni |
| D. | Paul |
| Answer» E. | |
| 105. |
The ability to attract the bond pair of electron towards itself of a covalently bond atom is called as |
| A. | polarity |
| B. | molarities |
| C. | electronegativity |
| D. | shielding effect |
| Answer» D. shielding effect | |
| 106. |
Different types of lone pairs possess different amount of |
| A. | repulsion |
| B. | attraction |
| C. | neutralization |
| D. | charge |
| Answer» B. attraction | |
| 107. |
One of the oxides below, that is covalently bonded is |
| A. | SO₂ |
| B. | SO₃ |
| C. | P₄O₁₀ |
| D. | all of above |
| Answer» E. | |
| 108. |
Sulfur hexafluoride (SF₆) is composed of no lone pair and |
| A. | six bonding pairs |
| B. | three bonding pairs |
| C. | two bonding pairs |
| D. | four bonding pairs |
| Answer» B. three bonding pairs | |
| 109. |
Triple covalent bond (≡) is formed in |
| A. | CO₂ |
| B. | CH₄ |
| C. | N₂ |
| D. | O₂ |
| Answer» D. O₂ | |
| 110. |
The bond created by overlapping of one modified orbit on another orbit is known as |
| A. | Sigma bond |
| B. | Pi bond |
| C. | Covalent bond |
| D. | coordinated covalent bond |
| Answer» B. Pi bond | |
| 111. |
Only covalent molecule conducting electricity is |
| A. | helium |
| B. | selenium |
| C. | mercury |
| D. | graphite |
| Answer» E. | |
| 112. |
The compounds which require high melting point, boiling point, high enthalpy change and a lot of energy to overcome of delocalized electrons are |
| A. | metals |
| B. | ionic compounds |
| C. | covalent compounds |
| D. | non-metals |
| Answer» C. covalent compounds | |
| 113. |
In forming an ionic bond in Potassium Fluoride (KF), Potassium ion (K+) |
| A. | gets a single positive charge |
| B. | gets a double positive charge |
| C. | gets a single negative charge |
| D. | gets a double negative charge |
| Answer» B. gets a double positive charge | |
| 114. |
Ionic crystals are non-conductors of electricity as |
| A. | they are in fixed positions |
| B. | they share strong electrostatic forces |
| C. | they have van der Walls forces |
| D. | they lack crystal lattices |
| Answer» C. they have van der Walls forces | |
| 115. |
In group of periodic table ionization energy is |
| A. | increased |
| B. | decreased |
| C. | constant |
| D. | released |
| Answer» C. constant | |
| 116. |
Arbitrary standard value which is given by fluorine on electro negativity scale is |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 7 |
| Answer» B. 5 | |
| 117. |
In H₂O molecule, unbounded electrons in oxygen are |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 118. |
The weak forces of attraction which exist in a molecule like Bromine are called |
| A. | dipole moment |
| B. | Van der Waals forces |
| C. | hydrogen bonding |
| D. | covalent bonding |
| Answer» C. hydrogen bonding | |
| 119. |
Simple molecules or giant macromolecules are examples of |
| A. | ionic compounds |
| B. | covalent bonds |
| C. | metallic bonds |
| D. | dative bond |
| Answer» C. metallic bonds | |
| 120. |
Fuels like petrol and natural gas are examples of |
| A. | ionic compounds |
| B. | covalent bonds |
| C. | metallic bonds |
| D. | dative bond |
| Answer» C. metallic bonds | |
| 121. |
The bombardment of X-rays on molecules and measuring energy of electrons (e⁻) is done by method |
| A. | spectrometry |
| B. | spectroscopy |
| C. | X-ray spectrometry |
| D. | X-ray spectroscopy |
| Answer» E. | |
| 122. |
Due to repulsive forces potential energy of system is |
| A. | decreased |
| B. | increased |
| C. | static |
| D. | modified |
| Answer» C. static | |
| 123. |
Metals in Group-II are highly likely to form |
| A. | ionic bonds |
| B. | covalent bonds |
| C. | metallic bonds |
| D. | dative bond |
| Answer» B. covalent bonds | |
| 124. |
A rigid lattice with more open arrangement of molecules is found in |
| A. | water |
| B. | nitrogen |
| C. | oxygen |
| D. | alcohol |
| Answer» B. nitrogen | |
| 125. |
A bond which is not symmetrical is a |
| A. | sigma bond |
| B. | pi bond |
| C. | ionic bond |
| D. | coordinate covalent bond |
| Answer» C. ionic bond | |
| 126. |
In chemical bounding, which force has more magnitude of potential energy? |
| A. | attractive |
| B. | repulsive |
| C. | inter molecular |
| D. | intra molecular |
| Answer» B. repulsive | |
| 127. |
Variation of covalent radii in groups and periods is almost same as of |
| A. | ionic radii |
| B. | atomic radii |
| C. | molecular radii |
| D. | nucleur radii |
| Answer» C. molecular radii | |
| 128. |
Elements in Group-V are likely to form |
| A. | ionic bonds |
| B. | covalent bonds |
| C. | metallic bonds |
| D. | dative bond |
| Answer» C. metallic bonds | |
| 129. |
From up to down in a group of periodic table proton number |
| A. | decrease |
| B. | neutral |
| C. | increase |
| D. | fluctuate |
| Answer» D. fluctuate | |
| 130. |
First ionization energy of hydrogen is |
| A. | 1313 |
| B. | 1212 |
| C. | 1111 |
| D. | 1414 |
| Answer» B. 1212 | |
| 131. |
Size of ionic radius of anion as compared to atomic radius of anion is |
| A. | greater |
| B. | smaller |
| C. | equal |
| D. | oval |
| Answer» B. smaller | |
| 132. |
Giant crystal lattices are only formed in |
| A. | ionic compounds |
| B. | covalent compounds |
| C. | metallic compounds |
| D. | dative bond |
| Answer» B. covalent compounds | |
| 133. |
The bond angle of SF₆ is |
| A. | 90° |
| B. | 180° |
| C. | 120° |
| D. | 87.5° |
| Answer» B. 180° | |
| 134. |
Number of stable chemical bonds formed by noble gases is |
| A. | very few |
| B. | moderate |
| C. | large |
| D. | very large |
| Answer» B. moderate | |
| 135. |
First ionization energy of potassium is |
| A. | 419 |
| B. | 417 |
| C. | 416 |
| D. | 418 |
| Answer» B. 417 | |
| 136. |
The types of intermolecular forces are |
| A. | Van der Waals's forces |
| B. | dipole-dipole interaction |
| C. | hydrogen bonding |
| D. | all of above |
| Answer» E. | |
| 137. |
Formation of Cl₂ requires sharing of |
| A. | one electron |
| B. | one pair of electrons |
| C. | three electrons |
| D. | two pairs of electrons |
| Answer» B. one pair of electrons | |
| 138. |
The bond angle between ammonia molecule is equal to |
| A. | 107.5° |
| B. | 101.5° |
| C. | 103.5° |
| D. | 104.5° |
| Answer» B. 101.5° | |
| 139. |
Bond energy refers to the |
| A. | energy required to make a mole of a compound |
| B. | energy required to break a mole of a compound |
| C. | energy required to carry out sublimation |
| D. | none of above |
| Answer» C. energy required to carry out sublimation | |
| 140. |
The physical properties of bonding are influenced by bonding between |
| A. | atoms |
| B. | ions |
| C. | molecules |
| D. | all of above |
| Answer» E. | |
| 141. |
Magnesium Oxide (MgO) is formed through |
| A. | two magnesium ions and one oxygen ion |
| B. | one magnesium ion and one oxygen ion |
| C. | two magnesium ions and two oxygen ion |
| D. | one magnesium ion and two oxygen ion |
| Answer» C. two magnesium ions and two oxygen ion | |
| 142. |
Stable noble gas which lies near to Mg is |
| A. | Argon |
| B. | Xenon |
| C. | Neon |
| D. | helium |
| Answer» D. helium | |
| 143. |
When force of attraction decreases electron affinity |
| A. | remains same |
| B. | increases |
| C. | decreases |
| D. | doubles |
| Answer» D. doubles | |
| 144. |
force of attraction which held together oppositely charged K and Cl ions, is |
| A. | electrostatic force |
| B. | electromagnetic |
| C. | dipole dipole |
| D. | intermolecular |
| Answer» B. electromagnetic | |
| 145. |
The word for three angles is |
| A. | tetrahedral |
| B. | trigonal |
| C. | trigonal planar |
| D. | octahedral |
| Answer» C. trigonal planar | |
| 146. |
The shape of a water molecule is |
| A. | linear |
| B. | non-linear |
| C. | pyramidal |
| D. | tetrahedron |
| Answer» C. pyramidal | |
| 147. |
The particles of matter are joined together was first proposed in 1685 by |
| A. | Isaac Newton |
| B. | JJ Thomson |
| C. | Lewis |
| D. | Albert Thomas |
| Answer» B. JJ Thomson | |
| 148. |
In ammonia, greater repulsion is of |
| A. | lone pair-bond pair |
| B. | bond pair-bond pair |
| C. | lone pair-lone pair |
| D. | lone pair-bond pair-lone pair |
| Answer» B. bond pair-bond pair | |
| 149. |
Values of group IIA, VA and VII in every period is |
| A. | high |
| B. | low |
| C. | change |
| D. | neutral |
| Answer» C. change | |
| 150. |
Covalent compounds are |
| A. | normally gases |
| B. | volatile liquids |
| C. | have low melting and boiling points |
| D. | all of these |
| Answer» E. | |