AFNS Repeated MCQs 2023
- What is 1 torr equal to?
a) 1 mmHg
b) 1 atm
c) 1 Pa
d) 1 bar
Correct answer: a) 1 mmHg
2.What is the unit of mutual induction?
a) Henry (H)
b) Ohm (Ω)
c) Farad (F)
d) Ampere (A)
Correct answer: a) Henry (H)
Zeeman Effect:
3.What is the Zeeman effect?
a) Splitting of spectral lines due to electric fields
b) Splitting of spectral lines due to nuclear spin
c) Splitting of spectral lines due to magnetic fields
d) Splitting of spectral lines due to gravitational forces
Correct answer: c) Splitting of spectral lines due to magnetic fields
Stark Effect: - What is the Stark effect?
a) Splitting of spectral lines due to electric fields
b) Splitting of spectral lines due to nuclear spin
c) Splitting of spectral lines due to magnetic fields
d) Splitting of spectral lines due to gravitational forces
Correct answer: a) Splitting of spectral lines due to electric fields - What is 1 farad equal to?
a) 1 coulomb/volt
b) 1 coulomb/ohm
c) 1 coulomb/ampere
d) 1 coulomb/second
Correct answer: a) 1 coulomb/volt
Angular Velocity: - What does angular velocity represent?
a) Speed of an object along its path
b) Rate of change of linear velocity
c) Speed of an object in circular motion
d) Rate of change of acceleration
Correct answers) Speed of an object in circular motion: - What is the linear velocity angle?
a) The angle between the object’s linear velocity vector and its acceleration vector
b) The angle between the object’s linear velocity vector and the tangent to its path
c) The angle between the object’s linear velocity vector and the centripetal force vector
d) The angle between the object’s linear velocity vector and the radial vector
Correct answer: b) The angle between the object’s linear velocity vector and the tangent to its
path - In which phase does the growth of bacteria take place?
a) Lag phase
b) Logarithmic (exponential) phase
c) Stationary phase
d) Death phase
Correct answer: b) Logarithmic (exponential) phase - The color of xanthophyll is:
a) Yellow
b) Green
c) Red
d) Blue
Correct answer: a) Yellow - Ova are released from the:
a) Ovaries
b) Uterus
c) Fallopian tubes
d) Cervix
Correct answer: a) Ovaries
11.Cyanobacteria are:
a) Bacteria that can photosynthesize
b) Bacteria that are only found in cold environments
c) Bacteria that are parasitic in nature
d) Bacteria that exclusively live in aquatic environments
Correct answer: a) Bacteria that can photosynthesize - A synonym for “crude” is:
a) Rough
b) Polished
c) Sophisticated
d) Delicate
Correct answer: a) Rough - A synonym for “doubt” is:
a) Uncertainty
b) Confidence
c) Clarity
d) Conviction
Correct answer: a) Uncertainty - A synonym for “perceived” is:
a) Noticed
b) Concealed
c) Forgotten
d) Disregarded
Correct answer: a) Noticed - A synonym for “entirely” is:
a) Wholly
b) Partially
c) Sparingly
d) Temporarily
Correct answer: a) Wholly - A synonym for “wild” is:
a) Untamed
b) Domesticated
c) Civilized
d) Orderly
Correct answer: a) Untamed - Which compound represents a primary alcohol?
a) Ethanol
b) Propanal
c) Butanoic acid
d) Methanoic acid
Correct answer: a) Ethanol - Which of the following is a strong acid?
a) Acetic acid (CH3COOH)
b) Hydrochloric acid (HCl)
c) Citric acid (C6H8O7)
d) Nitric acid (HNO3)
Correct answer: b) Hydrochloric acid (HCl) - The electronegativity of NaCl (sodium chloride) is:
a) High
b) Low
c) Variable
d) None of the above
Correct answer: a) high
here are some multiple-choice questions (MCQs) related to Zygomycetes: - What is the primary mode of reproduction in Zygomycetes?
a) Binary fission
b) Budding
c) Conjugation
d) Fragmentation - Zygomycetes are known for their characteristic:
a) Multicellular gametangia
b) Unicellular gametangia
c) Zoospores
d) Ascocarps - Which structure is formed as a result of sexual reproduction in Zygomycetes?
a) Ascocarp
b) Basidiocarp
c) Zygospore
d) Sporangiophore - The hyphal structure responsible for asexual spore formation in Zygomycetes is
called:
a) Conidiophore
b) Ascus
c) Basidium
d) Sporangiophore - Zygomycetes are commonly found in habitats such as:
a) Freshwater
b) Marine environments
c) Terrestrial soils
d) Extreme cold regions - What is the primary purpose of a venturi meter?
A) Measure the temperature of fluids in a pipe.
B) Increase the pressure of fluids in a pipe.
C) Measure the flow rate of fluids in a pipe.
D) Separate different components of fluids in a pipe.
Correct Answer: C) Measure the flow rate of fluids in a pipe. - In what form are hormones NOT present?
A) Solid particles
B) Gaseous molecules
C) Liquid solution
D) Chemical messengers dissolved in blood
Correct Answer: A) Solid particles - What is the composition of the middle lamella?
A) Proteins and lipids
B) Cellulose and pectin
C) Cholesterol and phospholipids
D) Starch and sugars
Correct Answer: B) Cellulose and pectin - Which of the following is a characteristic that a bacterial cell is generally NOT
resistant to?
A) Antibiotics
B) Environmental changes
C) Nutrient deficiencies
D) Viral infections
Correct Answer: D) Viral infection - Methylformate and acetic acid are which type of isomers.
(a) Position isomers
(b) Tautomeric
(C) Functional
(D)chain isomers
The correct answer is: (C) Functional - Which characteristic is commonly shared between plants and fungi?
A) Chemosynthesis as the main mode of energy production
B) Ability to perform photosynthesis
C) Presence of chitin in their cell walls
D) Reliance on animal pollination for reproduction
Correct Answer: C) Presence of chitin in their cell walls - Which of the following is the best option for disinfecting your slab?
A) Phenols
B) Sulphur
C) Bleach (Sodium hypochlorite)
D) Vinegar (Acetic acid)
Correct Answer: C) Bleach (Sodium hypochlorite) - If we double the velocity and radius of an object, what will happen to the centripetal force?
A) It will quadruple.
B) It will double.
C) It will become half.
D) It will remain the same.
Correct Answer: B) It will double. - Which of the following best describes the nature of ammonium chloride?
A) Strong acid
B) Weak acid
C) Strong base
D) Neutral substance
Correct Answer: B) Weak acid - What is the chemical formula of wood spirit?
A) C2H6O
B) CH4O2
C) CH3OH
D) C3H8O3
Correct Answer: C) CH3OH - He is blind __ one eye.
A) for
B) with
C) in
D) at
Corect C) in - Which organic compound does not undergo the Cannizzaro reaction?
A) Aldehydes
B) Ketones
C) Aromatic compounds
D) α-Hydroxy aldehydes
Correct Answer: A) Aldehydes - Which of the following is a mixture of low-boiling hydrocarbons?
A) Ethanol
B) Propanoic acid
C) Gasoline
D) Glycerol
Correct Answer: C) Gasoline - My brother is devoted —–religion.
A) To
B) With
C) At
D) In
Correct Answer: A) To - What is the maximum angle of projection for a projectile to achieve maximum
range?
Correct answer: 45 degrees
35.Pepsin is a(n):
● Enzyme
● Protein
● Carbohydrate
● Lipid
Correct answer: enzyme - Which scientist performed an experiment in 1934 on auxins, a plant hormone?
● A. Charles Darwin
● B. Frits Went
● C. Adolf Butenandt
● D. Karl von Frisch
Correct answer: B. Frits Went - What is the main event that happens during pachytene of Meiosis I?
● A. Crossing over
● B. Synapsis
● C. Condensation of chromosomes
● D. Dissolution of the nuclear membrane
Correct answer: A. Crossing over - What is the term for energy per unit volume?
● A. Energy density
● B. Power density
● C. Momentum density
● D. Force density
Correct answer: A. Energy density - Which of the following elements has the highest electronegativity?
● A. Fluorine (F)
● B. Chlorine (Cl)
● C. Oxygen (O)
● D. Nitrogen (N)
Correct answer: A. Fluorine (F) - Which of the following waves could be polarized?
● A. Sound waves
● B. Light waves
● C. Radio waves
● D. Heat waves
Correct answer: b,c,d are correct - Which carbohydrate is the least sweet?
Glucose
Fructose
Sucrose
Starch
The correct answer is (4) - Which of the following is a synonym of the word “embellished”?
Adorned
Decorated
Enhanced
Enriched
All of the above
The correct answer is (5), all of the above - heme group contain
Answer: iron atom - The removal of the thyroid gland is called a
Answer: Thyroidectomy - which element belong to first period?
Answer: Hydrogen and Helium. - oxidation state of sodium
Answer: oxidation state of sodium is +1. - which fungi get their food from dead organic matter
Answer: Saprophytic fungi - find ph of 0.001m of hcl
Answer: pH of 0.001 M HCl is 3.
In the case of 0.001 M HCl, the concentration of hydrogen ions is 0.001 M. So, the pH
of the solution is:
pH = -log(0.001)
pH = 3 - which is least acidic
Answer: phenol - Fungi that cannot live without a host are called
Answer: obligate parasites - fascinating synonym
● captivating
● compelling - The cell wall of cyanobacteria is formed
Answer: Peptidoglycan layer
Outer membrane - The combined effect of inductance
Answer: Impedance - Which vitamin is given to the new born baby to prevent excessive bleeding?
Answer: vitamin K - adverse synonym
● Unfavorable
● Unlucky - The reaction of an acid and metal carbonate will lead to formation?
acid + metal carbonate → salt + water + carbon dioxide
For example:
HCl + CaCO3 → CaCl2 + H2O + CO2 - The act of transfer of pollen grains from the male anther of a flower to the
female stigma
Pollination - The molecule with the shorter bond angle is
BH3. - The organelle that acts as a protein factory is the
Ribosomes - The organelle that is not present in plant cells
Centrioles - if frequency increases then conductance?
Answer: the conductance increases with frequency - The element that has a giant covalent structure is:
Answer: silicon (Si)
Here are some examples of materials that have giant covalent structures:
● Diamond
● Graphite
● Silicon dioxide (silica)
● Boron nitride
● Carbon nanotubes - which carbohydrate is least soluble( 1. Glucose ,2.sucrose ,glycogen)
Answer: Glycogen - when momentum is equal to K. E. what is the velocity?the velocity of the object is
Answer: 2 m/s.
momentum= p = mv
KE = 1/2mv^2
If momentum is equal to kinetic energy, then we have:
p = KE
mv = 1/2mv^2
v = 2 m/s - :when electric field enters into magnetic field the velocity.
Answer: Unaffected - A vaccine for rabies was discovered by ?
Answer: Louis Pasteur and his colleagues in 1885 - Which scientists gave the germ theory?
Answer: Robert Koch (1843-1910) - A CRO can be used to measure :
Answer: current and voltage - unit of surface tension is same as
Answer: N/m. - 3-dihydroxybenzene is also known as
Answer: Resorcinol
It is a white, crystalline solid that is soluble in water and alcohol. It is a weak acid and has a
characteristic sweet taste. - which type of bond and how many bond are present in CaC₂?
Answer: bond present in CaC₂ is ionic. There are 2 bonds present in CaC₂.
in CaC₂, but 1 sigma and 2 pi bonds are present between the two carbon atoms. - which of the following element have unpaired electrons in s subshell
A) Cr
B) Co
C) Fe
D) Mn
Mn
73.
If the Earth’s radius were to shrink to half of its current value, the day would only last
Answer: 6 hours. - The H-X-H bond angle is smallest for
Answer: H2Te. - The cell wall of bacteria is made up of
Answer: peptidoglycan, also called murein - Under what category can a floor cleaning agent that serves to make floors
bacteria-free be placed?
Answer: Disinfectant
The most common disinfectants used for floor cleaning are:
● Bleach
● Quaternary ammonium compounds (quats)
● Alcohol
● Hydrogen peroxide
● Vinegar
● Tea tree oil - if earth stop rotating maximum weight appear at
Answer: Equator. - A person of mass 60 kg carries a bag of 15 kg to a building 10 m high in 5 minutes.
What is the power?
Answer: The power is 24 watts - A ball of mass m moving with velocity V on a frictionless surface collides with
another ball of the same mass. What is the velocity of the second ball after the collision?
Answer: v2 = -v1
Here is the formula for calculating the velocity of the second ball after the collision:
v2 = -v1
where:
● v2 is the velocity of the second ball after the collision
● v1 is the velocity of the first ball before the collision
In this case, v1 = V, so v2 = -V. - antonym of Immaculate
● dirty
● filthy
● unclean
● blemished
● flawed
● imperfect
86.common name of 2-hydroxypropanoic acid is
Answer: lactic acid - if A is (2i + 3j) and B is (3i + 4j) then A+ B is
Answer: A+B = (5i + 7j).
To find A+B, we simply add the corresponding components of A and B:
A + B = (2i + 3j) + (3i + 4j) = (2 + 3)i + (3 + 4)j = 5i + 7j - Magnetic field in a conductor directly proportional to
Answer: Current
The formula for the magnetic field at a point due to a current carrying conductor is:
B = μ0I/2πr
89.he dimensions of the time constant RL during the growth and decay of current in all
inductive circuits are the same as those of
Time. - A molecule having both a carboxylic functional group and an alcoholic functional
group
Answer: ester - if a car travels for 2 hours and cover 120 miles we can work speed as?
the speed of the car is
Answer: 60 miles per hour.
Speed = Distance / Time = 120 miles / 2 hours = 60 miles per hour - which bacteria can switch from areobic respiration in the availabilty of oxygen?
Answer: facultative anaerobes. - The minimum angle of projection for a projectile is
Answer: 90 degrees. - pachytene is a
Answer: Pachytene is the third stage of prophase in meiosis - The acceleration of a free-falling object is
Answer: Constant - If the error in the measurement of mass is 2% and the error in the measurement of
velocity is 3%, then the error in the measurement of kinetic energy is
Answer: 8%.
The percentage error in the measurement of kinetic energy is:
= (2 + 2*3)%
= 8% - pramatic opposite is
● Impractical
● Unrealistic
● - DNA is present in
Answer: nucleus of eukaryotic cells - The hyphal structure responsible for asexual spore formation in Zygomycetes is
called a
Sporangiophore. - The property of carbon chain formation is called
Catenation - The ratio of lengths of two wires made up of same material is 2 : 3 and the ratio of
areas of cross section 3 : 2 . The ratio of their resistances is
4 : 9.
102: which type of fungi perform Fertilization involves plasmogamy followed by
karyogamy?
Ascomycetes
103:Consider a cup that is half-filled and rotating. What will happen if it is filled to the
brim?
slow down
104:if a convex lens and a concave lens have the same focal length of f, the focal
length of the combination will be
Zero.
105: In which phase of growth do bacteria consume a high amount of nutrients?
Answer: logarithmic phase
106: The IUPAC name of Teflon is
Answer: polytetrafluoroethylene (PTFE) - R-Mg-X reacts with CO2 to form
Answer: carboxylic acid
.
108: :Electronic configuration of Cr+3 (Ar)…?
Answer: [Ar] 3d³.
109: AC generators work on the principle of
Answer: Faraday’s law of electromagnetic induction
110:which fungi is un eatable
Answer: Amanita fungi
111:what is fungi function in lichin association
Answer: provide habitat to the partner
112:What are the similarity between cyanobacteria and animals?
Answer: Both can be motile
113:Number of free electrons in nickel Ni2+
Answer: 2.
114: In which motion gravity works zero on body
Answer: Horizontally
115: which is not the function of glycolipid
A: Provide structure to cell wall
B: give energy to body
C: act as Channel proteins for transport across membrane ✔
116: When the kinetochore fibers contract and microtubules elongate, the cell is present
in which stage of mitosis?
Answer: Anaphase
117: the name of spiral shape bacteria is :
Answer: Spirochaeta
118: The device used in the hot ends of 3D printers to monitor the heat produced
and allow the printer to keep a constant temperature for melting the plastic is
called a
Answer: Thermistor.
119: The product of the nucleophilic substitution reaction between 2-iodobutane and
sodium ethoxide (CH3CH2ONa) is
Answer: 2-ethoxybutane (CH3CH2OCH2CH2CH3)
120: if a voltmeter measure 250V and frequency is 50Hz,what will be the peak
value?
Therefore, the peak value of the voltage is 353.55 V.
121: “The teacher helped the students to check their homework.
122: Main source of organic compound is:
Answer: Coal
123: If force is 700N and x is 7cm and y is 1cm then work done will be ?
Answer: the total work done is 49 Joules.
124:*At centre of earth acceleration of gravity is
Zero
125: which one is not a nucleotide?
Answer: NAD
126: which one is monokaryotic?
Answer: Basidiopore
127: which one process does not occur in pachytene of meiosis1?
Answer: The disappearance of the nucleolus
128: which is microaerophilic bacteria?
Answer: Campylobacter
129: Octopus belongs to the class____.
Answer: Cephalopoda
130: What is the common name of a devilfish?
Answer: Octopus
131: Which of the following statements is true about Unio?
Answer: Unio has a three-chambered heart.
132: The chemical formula of camphor is
Answer: C10H16O
133: if a voltmeter measure 250V and frequency is 50Hz,what will be the peak value?
Answer: 353.55 V
134: The other name for 1, 2, 3-trihydroxybenzene is
Answer: Pyrogallol
135: the total number of bonds in CaC2 is
Answer: One sigma bond and two pi bonds.
136: When bacteria are put in a hypotonic solution, which structure prevents
them from osmotic lysis?
Answer: cell wall
137: In which type of fungi asexual reproduction is absent :
Answer: Deuteromycetes.
138: The gravitational field of the Earth is maximum at the
Answer: Poles
139: which protien more abundant in nature?
Answer: Rubisco, also known as ribulose bisphosphate
140: Direct:
The audience said, “What a dull day!
Indirect:
The audience complained that it was a dull day.
141:What is the effect of radioactivity on women developing a zygote?
Answer: Increased risk of genetic mutations
142 : What is the size range of Gram-positive bacteria?
Answer: Microscopic, typically 0.5 to 5 micrometers.
143: Where is gravitational intensity the highest?
Answer: Earth’s poles.
144: Which of the following statements is INCORRECT for ‘conidia’?
Answer:Conidia are produced endogenously and ascospores exogenously.
145: Which of the following is mismatched?
Answer: Centriole – Cilia formation.
146: Asexual reproduction is uncommon in
Answer: Ascomycetes
147: An amino acid consists of:
Answer: Amino group (NH2) and carboxyl group (COOH).
148: which one is not a mono nucleotide
Answer: NAD
149: If the AC voltage is 250V with a frequency of 50Hz, what is the peak voltage
value?
Answer: 353.55 V.
150: Which characteristic is shared between Penicillium and Aspergillus?
Answer: Both are filamentous fungi.
151: When SiCl4 reacts with H2O, what type of reaction occurs?
Answer: Acidic reaction, no precipitate.
152: What happens when a Grignard reagent reacts with CO2?
Answer: Formation of a carboxylic acid.
153: What is the term for benzene with an NH2 (amino) group attached?
Answer: Aniline
154: Bacteria that are similar in shape to clusters of grapes are known as:
Answer: Staphylococcus
155: Fungi are commonly found in pickles because they have a tendency to thrive in:
Answer: Moist environments.
156: Which one is different from the others?
A) Yeast
B) Penicillin
C) Aspergillus
D) Amanita
Answer: D) Amanita
157: What is the reciprocal of bulk modulus?
Answer: Compressibility
158: What does the ratio of stress to strain represent?
Answer: Young’s modulus
159: What part of speech is “curiosity”?
Answer: Noun
160: In which region do the limiting lines of a series lie?
Answer: UV region
161: The term used to describe the average distance between two consecutive collisions
is known as the
Answer: “mean free path.”
162: What is the common immunosuppressive drug obtained from fungi that is typically
administered to patients who have undergone a kidney transplant?
Answer: “Cyclosporine.”
163: Fats and oils are composed of molecules known as
Answer: Triglycerides.
164: which sugar in pentose and present in RNA ?
Ribose
165: the peak of highest intensity in a mass spectrum is called the
Answer: base peak
166: If impedance is at its maximum value, the corresponding current will be
Answer: Zero
167: the radioactive isotope of hydrogen is called
Answer: Tritium
168: Ethanoic acid is present in
Answer: Vinegar.
169: The ratio of electromagnetic force between two electrons is
Answer: 4 × 10^20.
170: , if the momentum of an object is doubled, its kinetic energy will increase by
Answer: 4 times
171: In which type of circuit does the current lead the voltage
Answer: RC circuit
172: The largest bone in the human body is the
Answer: femur bone
173: how many faces of plane prism
5 174: Synonym of DANDY
● Aristocratic
● Dapper
● Fashionable
● Foppish
● Natty
● Sharp
175: Synonym of Prejure
● Lie
● Deceive
● Falsify
176:: The middle lamella of plants is made up of
Answer: calcium and magnesium pectates
177: Correct spelling of Mancellanieous..?
Answer: Miscellaneous متفرق
178: The structure of benzene is
Answer: regular planar
179: The radius of the third orbit of hydrogen is
Answer: 4.761 angstroms.
180: Are fungi predominantly diploid or haploid?
Answer: haploid.
