Class 7th Science Chapter 1 MCQ. We covered all the Class 7th Science Chapter 1 MCQ online test with answers in this post for free so that you can practice well for the exam.
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Class 7th Science Chapter 1 MCQ for Students
Which one of the following vitamins has a role in blood clotting?
(a) Vitamin A
(b) Vitamin B
(c) Vitamin D
(d) Vitamin K
Option d – Vitamin K
Which one of the following is considered as ‘good cholesterol’ with reference to individuals facing the risk of cardiovascular diseases and hypertension?
(a) High-Density Lipoprotein (HDL)
(b) Low-Density Lipoprotein (LDL)
(c) Triglyceride
(d) Fatty acids
Option b – Low-Density Lipoprotein (LDL)
Which one of the following vitamins is abundant in guava fruits? ( Class 7th Science Chapter MCQs )
(a) Vitamin-A
(b) Vitamin-B12
(c) Vitamin-C
(d) Vitamin-D
Option c – Vitamin-C
The primary source of vitamin D for human beings is
(a) citrus fruits
(b) green vegetables
(c) yeast
(d) sun
Option d – sun
The vitamin(s), which is/are generally excreted in the urine, is/are ( Class 7th Science Chapter MCQs )
(a) vitamin-A
(b) vitamin-B
(c) vitamin-E
(d) vitamin D, and K
Option b – vitamin-B
Cattle are capable of digesting cellulose present in the grass and/or fodder that they eat. This ability is attributed to the
(a) presence of cellulose-degrading bacteria in the rumen
(b) production of cellulose by the cattle rumen
(c) acids present in the rumen
(d) prolonged retention of cellulose in the rumen
Option a – presence of cellulose-degrading bacteria in the rumen
If pepsin is lacking in gastric juice, then the event in the stomach will be affected : ( Class 7th Science Chapter MCQs )
(a) Digestion of starch into sugars
(b) Proteins break down into peptides
(c) Breaking of fats into glycerol and fatty acids
(d) Digestion of nucleic acids
Option b – Proteins break down into peptides
This part of the alimentary canal absorbs the maximum amount of water and minerals :
(a) Small intestine
(b) Large intestine
(c) Stomach
(d) Oesophagus
Option b – Large intestine
The pancreas is composed of ( Class 7th Science Chapter MCQs )
(a) Only exocrine cells
(b) Only endocrine cells
(c) Both endocrine and exocrine
(d) Nephrons
Option c – Both endocrine and exocrine
Which of the following is a source of instant energy?
(a) Salt
(b) Glucose
(c) Water
(d) Starch
Option b – Glucose
If by an unknown accident, the acid-secreting cells of the stomach wall of an individual are damaged, digestion of which one of the following biomolecules will be affected to a greater extent?
(a) Protein only
(b) Lipid
(c) Carbohydrate only
(d) Protein and Carbohydrate
Option a – Protein only
Intake of which one of the following food components should be minimized by patients having Gouty Arthritis due to elevated serum uric acid levels? ( Class 7th Science Chapter MCQs )
(a) Food fibers
(b) Nucleic acid
(c) Lipids
(d) Carbohydrates
Option b – Nucleic acid
Sugarcane is one of the important cash crops in India. It is grown to obtain
(a) Starch
(b) Glucose
(c) Fructose
(d) Sucrose
Option d – Sucrose
The term ‘Probiotic’ is applied to ( Class 7th Science Chapter MCQs )
(b) Antacids
(c) Antibiotics
(d) Live microbial food supplement
Option d – Live microbial food supplement
Which one of the following chemicals helps in fruit ripening?
(a) Ethephon
(b) Atrazine
(c) Isoproturan
(d) Malathion
Option a – Ethephon
When soggy biscuits are kept inside the fridge for some time they become crisp because ( Class 7th Science Chapter MCQs )
(a) cooling releases extra moisture
(b) humidity inside the fridge is low and extra moisture is absorbed
(c) humidity inside the fridge is high and extra moisture is absorbed
(d) the pressure inside the fridge is high and helps in releasing extra moisture
Option b – humidity inside the fridge is low and extra moisture is absorbed
Food becomes ………… due to bile juice.
(a) Acidic
(b) Alkaline
(c) Neutral
(d) First neutral and then acidic
Option c – Alkaline
Which of the following vitamins is used as an antidote to anticoagulant poisons? ( Class 7th Science Chapter MCQs )
(a) Vitamin A
(b) Vitamin D
(c) Vitamin E
(d) Vitamin K
Option d – Vitamin K
The process in which the food is taken in by body cells and used for energy, growth, and repair is called
(a) Assimilation
(b) Absorption
(c) Digestion
(d) Ingestion
Option a – Assimilation
Which of the following Vitamin is known as ergocalciferol? ( Class 7th Science Chapter MCQs )
(a) Vitamin D2
(b) Vitamin D3
(c) Vitamin B12
(d) Vitamin B6
(e) None of the above / More than one above
Option a – Vitamin D2
Dietary intake of ‘Iodine’ is essential for the normal functioning of the thyroid gland. Which among the following is considered to the naturally rich in iodine? 1. Table salt 2. Seafood 3. Dairy products
(a) Only 1
(b) 1 and 2
(c) 1 and 3
(d) 1, 2 and 3
Option d – 1, 2 and 3
Insulin is ( Class 7th Science Chapter MCQs )
(a) Fat
(b) Vitamin
(c) Carbohydrate
(d) Protein
Option d – Protein
In the human body, Vitamin A is stored in ( Class 7th Science Chapter MCQs )
(a) the Liver
(b) the Skin
(c) the Lung
(d) the Kidney
Option a – the Liver
Which one of the following statements is not correct?
(a) In the steady flow of a liquid, the velocity of liquid particles reaching a particular point is the same at all points.
(b) Steady flow is also called streamlined flow.
(c) In steady flow, each particle may not follow the same path as taken by a previous particle passing through that point.
(d) Two streamlines cannot intersect with each other.
Option c – In steady flow, each particle may not follow the same path as taken by a previous particle passing through that point
Viscosity is the property of liquids by virtue of which they
(a) attract other molecules.
(b) become conducting.
(c) oppose the relative motion of its parts.
(d) push neighboring molecules.
Option c – oppose the relative motion of its parts
A liquid disturbed by string comes to rest due to
(a) density
(b) surface tension
(c) viscosity
(d) centripetal force
Option c – viscosity
With the rise of temperature, the viscosity of liquid
(a) increases
(b) decreases
(c) remains unchanged
(d) may increase or decrease depending on nature of liquid
Option b – decreases
Consider the following statements. I. The viscosity of a gas increases with rise in temperature. II. The viscosity of the liquid falls very rapidly with rise in temperature. Which of the statement(s) given above is/are correct?
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II
Option c – Both I and II
Assertion (A) Machine parts or jammed in winter. Reason (R) The viscosity of lubricant used in machine parts increase at low temperature. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are 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
Option a – Both A and R are true and R is the correct explanation of A
Bernoulli’s principle is based on the law of conservation of
(a) angular momentum
(b) linear momentum
(c) mass
(d) energy
Option d – energy
The working of venturimeter is based on
(a) Torricelli’s Law
(b) Pascal’s Law
(c) Bernoulli’s Theorem
(d) Archimede’s Principle
Option c – Bernoulli’s Theorem
The working of an atomiser depend upon
(a) Bernoulli’s Theorem
(b) Boyle’s Law
(c) Archimedes Principle
(d) None of the above
Option a – Bernoulli’s Theorem
An application of Bernoulli’s equation for fluid flow is found in
(a) dynamic lift of an aeroplane
(b) viscosity meter
(c) capillary rise
(d) Hydraulic press
Option a – dynamic lift of an aeroplane
A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of ………
(a) gravitational force between train and man
(b) illusion of the man
(c) the centripetal force
(d) pressure difference due to fast moving air in between
Option d – pressure difference due to fast moving air in between
Two cars, passing each other at high speed, are in danger of side swiping because
(a) of the increase in air pressure in the space between them.
(b) of decrease in the velocity of air molecules between them.
(c) of decrease in air pressure in the space between them.
(d) of the increase in the velocity of air molecules between them.
Option c – of decrease in air pressure in the space between them
Soap bubble attains spherical shape due to ……..
(a) inertia
(b) pressure
(c) surface tension
(d) viscosity
Option c – surface tension
Along a streamline flow of fluid,
(a) the velocity of all fluid particles at a given instant is constant
(b) the speed of a fluid particle remains constant.
(c) the velocity of all fluid particles crossing a given position is constant.
(d) the velocity of a fluid particle remains constant.
Option c – the velocity of all fluid particles crossing a given position is constant
It is easier to swim in a sea water than in ordinary water because
(a) sea water contains salt.
(b) atmospheric pressure is highest at the sea level.
(c) density of sea water is less than that of ordinary water.
(d) density of sea water is higher than that of ordinary water.
Option d – density of sea water is higher than that of ordinary water
Whether an object will float or sink in a liquid, depends on
(a) mass of the object only.
(b) mass of the object and density of liquid only.
(c) difference in the densities of the object and liquid.
(d) mass and shape of the object only.
Option c – difference in the densities of the object and liquid
A body is just floating in a liquid if the body is slightly pressed down and released. It will
(a) start oscillating
(b) sink to the bottom
(c) come back to the same position immediately
(d) come back to the same position stable
Option b – sink to the bottom
A boat full of iron nails is floating on water in a lake. When the iron nails are removed, the water level
(a) rises
(b) falls
(c) cannot be determined
(d) remains constant
Option b – falls
A body is floating in a liquid partly immersed. The body and the liquid are taken to moon. The body
(a) will continue to float as before.
(b) floats with greater part immersed.
(c) floats with lesser part immersed.
(d) will sink
Option c – floats with lesser part immersed
Consider the following statements. The fraction of a ball floating inside the liquid depends upon I. Density of the liquid II. Mass of the ball III. Density of the ball Which of the statements given above are correct?
(a) I and II
(b) II and III
(c) I and III
(d) I, II and III
Option c – I and III
Selective serotonin reuptake inhibitor is.
a) Imipramine
b) Iproniazide
c) Fluoxetin
d) Naphazoline
Option c – Fluoxetin
Improvement of memory in Alzheimer’s disease is brought about by drugs that increase transmission.
a) Cholinergic receptors
b) Dopaminergic receptors
c) GABA receptors
d) Adrenergic receptors
Option a – Cholinergic receptors
Which one of the following is a plasminogen activator?
a) Tranexamic acid
b) Streptokinase
c) Aminocaproic acid
d) None of the other options
Option b – Streptokinase
Which one of the following drugs does NOT act through G-Protein coupled receptors?
a) Epinephrine
b) Insulin
c) Dopamine
d) TSH
Option b – Insulin
Which one of the following drugs is NOT a typical anti-psychotic agnet?
a) Chlorpromazine
b) Haloperidol
c) Risperidone
d) Flupentixol
Option c – Risperidone
Identify the drug which is NOT used in the treatment of malaria caused by Plasmodium falciparum.
a) Artemisinin
b) Primaquine
c) Quinine
d) Mefloquine
Option b – Primaquine
The nicotinic action of acetylcholine is blocked by the drug.
a) Atropine
b) Carvedilol
c) Neostigmine
d) d-Tubocurarine
Option d – d-Tubocurarine
The given antibiotic is an example of ansamycins.
a) Roxithromycin
b) Adriamycin
c) Aureomycin
d) Rifamycin
Option d – Rifamycin
Which of the following avoids the first-pass effect of the Drugs?
a) Oral ingestion
b) Rectal suppository
c) Intravenous injections
d) None of the other options
Option c – Intravenous injections
In which of the following phase of the clinical trail of Drug ethical clearance is not required?
a) Phase-1
b) Phase-2
c) Phase-3
d) Phase-4
Option d – Phase-4
Which of the following shows high first-pass metabolism?
a) Propranolol
b) Phenobarbitone
c) Phenylbutazone
d) Phenytoin
Option a – Propranolol
Pharmacovigilance is used for.
a) To monitor drug toxicity
b) To monitor unauthorized drug manufacture
c) Monitoring of students
d) Check costs
Option a – To monitor drug toxicity
Stevens-Johnson syndrome is the most common adverse effect associated with one of the following categories of drugs.
a) Sulphonamides
b) Penicillins
c) Macrolides
d) Tetracyclines
Option a – Sulphonamides
Artemisinin contains the following group in its structure.
a) An endoperoxide
b) An exoperoxide
c) An epoxide
d) An acid hydrazide
Option a – An endoperoxide
Streptomycin can NOT be given orally for the treatment of tuberculosis because.
a) It gets degraded in the GIT
b) It causes severe diarrhea
c) It causes a metallic taste in the mouth
d) It is not absorbed from the GIT
Option d – It is not absorbed from the GIT
The analyte is used in the form of a solution in flame photometry because it should undergo.
a) Evaporation
b) Condensation
c) Nebulisation
d) Precipitation
Option c – Nebulisation
Isoniazid is a primary antitubercular agent.
a) Requires pyridoxine supplementation
b) Causes ocular complications that are reversible if the drug is discontinued
c) Is ototoxic and nephrotoxic
d) Should never be used due to hepatotoxic potential
Option a – Requires pyridoxine supplementation
The mechanism of action of Paclitaxel is.
a) Bind to DNA through intercalation between specific bases and block the synthesis of new RNA or DNA, causing DNA strand scission
b) Mitotic spindle poison through the enhancement of tubulin polymerization
c) Competitive partial agonist of inhibitor of estrogen and binds to estrogen receptors
d) S-Phase specific antimetabolite that is converted by dioxygenase to the 5 mononucleotide
Option b – Mitotic spindle poison through the enhancement of tubulin polymerization
The mechanism of antiparasitic action of Mebendazole and thiabendazole involves.
a) Stimulation of acetylcholine receptors at neuromuscular junctions
b) Inhibition of dihydrofolate reductase
c) Interference with microtubule synthesis and assembly
d) Block thiamine transport
Option a – Stimulation of acetylcholine receptors at neuromuscular junctions
An agent used in Prinzemetal angina has spasmolytic action which increases coronary blood supply.
a) Nitroglycerine
b) Nifedipine
c) Timolol
d) Isosorbide mononitrate
Option a – Nitroglycerine
BMR is dependent upon.
a) Body weight
b) Surface area
c) Amount of adipose Tissue
d) Amount of lean body mass
Option b – Surface area
The site of ADH action is.
a) Proximal tubules
b) Loop of Henle
c) Vasa recta
d) Collecting tubules
Option d – Collecting tubules
The starting material for the synthesis of ALPRAZOLAM is.
a) 3-amino-5-bromoacetophenone
b) 2-amino-5-chlorobenzophenone
c) 2-amino-5-bromoacetophenone
d) 3-amino-5-chlorobenzophenone
Option b – 2-amino-5-chlorobenzophenone
A new drug delivery system that is composed of phospholipids that spontaneously form multilamellar concentric bilayer vesicles with layers of aqueous media separating the lipid layers.
a) Prodrugs
b) Liposomes
c) Osmotic pumps
d) Nanoparticles
Option b – Liposomes
A metabolite of SPIRONOLACTONE is.
a) Aldosterone
b) Canrenone
c) Corticosterone
d) Pregnenolone
Option b – Canrenone
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