When the temperature rises, what happens to the peak of the curve in the Maxwell–Boltzmann distribution graph?
उत्तर देखें
सही उत्तर: (B) Shifts forward and downward
1 अंक · 2023 · सेट A
प्रश्न 102
Plotting a graph between temperature and reaction rates can reveal the temperature dependence of reaction rates through
उत्तर देखें
सही उत्तर: (C) rate constant and temperature
1 अंक · 2023 · सेट A
प्रश्न 103
What effect does temperature have on the half-life of a first-order reaction?
उत्तर देखें
सही उत्तर: (D) More than one of the above
1 अंक · 2023 · सेट A
प्रश्न 104
Only a simple homogeneous reaction requires which of the following methods?
उत्तर देखें
सही उत्तर: (D) More than one of the above
1 अंक · 2023 · सेट A
प्रश्न 105
A first-order reaction is 50% complete in 30 minutes. Calculate the time it takes to complete 87.5% of the reaction.
उत्तर देखें
सही उत्तर: (C) 90 minutes
1 अंक · 2023 · सेट A
प्रश्न 106
In a reaction, what is the driving force?
उत्तर देखें
सही उत्तर: (C) Free energy
1 अंक · 2023 · सेट A
प्रश्न 107
What is the heat of reaction for ethyl acetate hydrolysis?
उत्तर देखें
सही उत्तर: (C) Zero
1 अंक · 2023 · सेट A
प्रश्न 108
What is produced by the reaction of natural gas and steam in the Haber–Bosch process?
उत्तर देखें
सही उत्तर: (A) Hydrogen
1 अंक · 2023 · सेट A
प्रश्न 109
In what form does nitrogen occur in plants?
उत्तर देखें
सही उत्तर: (C) Nitrate
1 अंक · 2023 · सेट A
प्रश्न 110
What happens to the size of atoms in p-block elements when moving from left to right in the same period?
उत्तर देखें
सही उत्तर: (C) Size decreases.
1 अंक · 2023 · सेट A
प्रश्न 111
When copper chips are exposed to concentrated nitric acid, which gas is produced?
उत्तर देखें
सही उत्तर: (B) Nitrogen(IV) oxide
1 अंक · 2023 · सेट A
प्रश्न 112
When ammonia is oxidized to form nitric acid, which catalyst is used?
उत्तर देखें
सही उत्तर: (A) Platinum-rhodium gauze
1 अंक · 2023 · सेट A
प्रश्न 113
Which statement about hypophosphorous acid is incorrect?
उत्तर देखें
सही उत्तर: (A) It is also called phosphonic acid.
1 अंक · 2023 · सेट A
प्रश्न 114
Which of the following compounds has phosphorus in the +5 oxidation state?
उत्तर देखें
सही उत्तर: (A) Peroxodiphosphoric acid
1 अंक · 2023 · सेट A
प्रश्न 115
Why is nitrogen preferred in welding and cooling materials?
उत्तर देखें
सही उत्तर: (A) It is an inert gas.
1 अंक · 2023 · सेट A
प्रश्न 116
The term ‘pnictogen’ refers to which group?
उत्तर देखें
सही उत्तर: (A) Group 15
1 अंक · 2023 · सेट A
प्रश्न 117
Producer gas is defined as which of the following mixtures?
उत्तर देखें
सही उत्तर: (C) Carbon monoxide and nitrogen
1 अंक · 2023 · सेट A
प्रश्न 118
Any substance made up of multiple repeating units, called _____, is referred to as a polymer.
उत्तर देखें
सही उत्तर: (A) mers
1 अंक · 2023 · सेट A
प्रश्न 119
Which of the following polymers does not fall within the configuration category?
उत्तर देखें
सही उत्तर: (A) Cross-linked
1 अंक · 2023 · सेट A
प्रश्न 120
Which of the following is not an example of a thermoplastic?
उत्तर देखें
सही उत्तर: (B) Epoxy
1 अंक · 2023 · सेट A
प्रश्न 121
Which of the following criteria does not apply to polymers?
उत्तर देखें
सही उत्तर: (C) Number of monomers
1 अंक · 2023 · सेट A
प्रश्न 122
Which of the following does not belong to the category of natural polymers?
उत्तर देखें
सही उत्तर: (C) Rayon
1 अंक · 2023 · सेट A
प्रश्न 123
The synthesis of which polymer necessitates the regular loss of small molecules?
उत्तर देखें
सही उत्तर: (B) Nylon-6,6
1 अंक · 2023 · सेट A
प्रश्न 124
The crystallinity of a polymer rises as its brittleness
उत्तर देखें
सही उत्तर: (A) increases
1 अंक · 2023 · सेट A
प्रश्न 125
The polymer absorbs _____ and expands.
उत्तर देखें
सही उत्तर: (A) water
1 अंक · 2023 · सेट A
प्रश्न 126
Which short-chain, low-molecular-weight polymers are known as liquid or gas polymers?
उत्तर देखें
सही उत्तर: (B) Oligo-polymers
1 अंक · 2023 · सेट A
प्रश्न 127
Which of the following stages is not part of addition polymerization?
उत्तर देखें
सही उत्तर: (B) Recrystallization
1 अंक · 2023 · सेट A
प्रश्न 128
A disaccharide is formed when two monosaccharides are bonded together by a
उत्तर देखें
सही उत्तर: (A) glycosidic bond
1 अंक · 2023 · सेट A
प्रश्न 129
Sucrose is a _____ chemical, and the combination of its hydrolysis products is _____ in nature.
उत्तर देखें
सही उत्तर: (C) dextrorotatory, laevorotatory
1 अंक · 2023 · सेट A
प्रश्न 130
Which of the following statements about maltose is incorrect?
उत्तर देखें
सही उत्तर: (B) It is a non-reducing sugar.
1 अंक · 2023 · सेट A
प्रश्न 131
Which of the following statements about starch is incorrect?
उत्तर देखें
सही उत्तर: (C) It is a reducing carbohydrate.
1 अंक · 2023 · सेट A
प्रश्न 132
RNA lacks which nitrogen base?
उत्तर देखें
सही उत्तर: (A) Thymine
1 अंक · 2023 · सेट A
प्रश्न 133
Lysine is an example of a polar but uncharged amino acid. Which of the following is one?
उत्तर देखें
सही उत्तर: (A) Serine
1 अंक · 2023 · सेट A
प्रश्न 134
Which of the following chemical classes does not belong to the vast group of carbohydrates?
उत्तर देखें
सही उत्तर: (D) More than one of the above
1 अंक · 2023 · सेट A
प्रश्न 135
Which of the following statements about metabolism is false?
उत्तर देखें
सही उत्तर: (A) It is due to this process that biomolecules do not have a turnover.
1 अंक · 2023 · सेट A
प्रश्न 136
How can we make an amine from an amino acid?
उत्तर देखें
सही उत्तर: (C) Removal of carbon dioxide
1 अंक · 2023 · सेट A
प्रश्न 137
When converting a disaccharide to monosaccharides, which bond is hydrolyzed?
उत्तर देखें
सही उत्तर: (B) Glycosidic bond
1 अंक · 2023 · सेट A
प्रश्न 138
To obtain carboxylic acids directly from alcohol, which oxidizing agent is used?
उत्तर देखें
सही उत्तर: (C) Acidified KMnO₄
1 अंक · 2023 · सेट A
प्रश्न 139
When phenol reacts with bromine water, what is the result?
उत्तर देखें
सही उत्तर: (C) White precipitate
1 अंक · 2023 · सेट A
प्रश्न 140
The Lucas test was carried out on three compounds, A, B and C. A and B were turbid at ambient temperature, while C did not become turbid until heated. Which compound has a tertiary structure?
उत्तर देखें
सही उत्तर: (D) More than one of the above
1 अंक · 2023 · सेट A
प्रश्न 141
Which compound is formed when secondary alcohols are oxidized by [O]?
उत्तर देखें
सही उत्तर: (C) Ketone
1 अंक · 2023 · सेट A
प्रश्न 142
Which of the following processes does not result in the production of alcohol?
उत्तर देखें
सही उत्तर: (B) Free-radical halogenation of alkenes
1 अंक · 2023 · सेट A
प्रश्न 143
Conversion of trialkyl borane to an alcohol does not require which of the following?
उत्तर देखें
सही उत्तर: (C) Diborane
1 अंक · 2023 · सेट A
प्रश्न 144
Ethers may be used as solvents because they react only with which of the following reactants?
उत्तर देखें
सही उत्तर: (C) Acids
1 अंक · 2023 · सेट A
प्रश्न 145
An aryl carbon can be found in which of the following compounds?
उत्तर देखें
सही उत्तर: (B) Phenol
1 अंक · 2023 · सेट A
प्रश्न 146
It is called a _____ ether when the alkyl groups connected to either side of the oxygen atom are different.
उत्तर देखें
सही उत्तर: (A) mixed
1 अंक · 2023 · सेट A
प्रश्न 147
Which of the following alcohols is not polyhydric?
उत्तर देखें
सही उत्तर: (C) Cyclohexanol
1 अंक · 2023 · सेट A
प्रश्न 148
Which of the following reactions can result in ketones?
उत्तर देखें
सही उत्तर: (B) Oxidation of secondary alcohols
1 अंक · 2023 · सेट A
प्रश्न 149
The Rosenmund reaction can produce which of the following carbonyl compounds?
उत्तर देखें
सही उत्तर: (B) Benzaldehyde
1 अंक · 2023 · सेट A
प्रश्न 150
The reaction that occurs between aldehydes and ketones is called