Which of the following is the high milk yielding variety of a cow?
- ARed sindhi
- ✓Holstein
- CDorset
- DSahiwal
Answer: B.
View full solution →Question types
Model Paper 7 question types
45 questions across 6 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
45
Questions
6
Question groups
5
Question types
01
M.C.Q. [1 M]
16 Q→02Assertion (A) & Reason (B) MCQ
4 Q→03Que-Ans (Each of 2 Mark )
8 Q→04Que-Ans (Each of 3 Mark )
9 Q→05Que-Ans (Each of 5 Mark )
5 Q→06Case study ( 4 Marks )
3 Q→Sample Questions
Model Paper 7 questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Which of the following settles down when allowed to stand undisturbed doe sometimes?
- ACopper sulphate solution
- BBlood
- ✓Muddy water
- DSolution of egg albumin in water
Answer: C.
View full solution →A student added only two drops of iodine to a rice extract in test tube 'A'. Another student added a little rice extract to iodine solution in test tube 'B'. They would then observe:
- Ano change of colour in any test tube
- ✓a change of colour to blue-black in both tubes 'A' and 'B
- Ca change of colour to blue-black in test tube 'B' but not in test tube 'A
- Da change of colour to blue-black in test tube 'A' but not in test tube '
Answer: B.
View full solution →Plant cell does not burst in a hypotonic solution because__________.
- AIts cell sap is rich in cellulose
- BIts cell sap is more concentrated
- ✓Its cell wall resists bursting
- DIt does not have lysosomes
Answer: C.
View full solution →Those organs of the body like oral cavity, esophagus, etc., which are subjected to mechanical abrasions are lined by
- Astratified cuboidal epithelium
- Bsimple squamous epithelium
- Csimple columnar epithelium
- ✓stratified squamous epithelium
Answer: D.
View full solution →Assertion (A): The atoms of different elements having same mass number but different atomic numbers are known as isobars.
Reason (R): The sum of protons and neutrons, in the isobars is always different.
Reason (R): The sum of protons and neutrons, in the isobars is always different.
- ABoth A and R are true and R is the correct explanation of A
- BBoth A and R are true but R is not the correct explanation of A.
- ✓A is true but R is false.
- D$A$ is false but $R$ is true.
Answer: C.
View full solution →Assertion (A): Student of class IX covered the potted plant with a glass jar, water vapour appears on the wall of the glass jar.
Reason (R): Desert plants, the epidermis has a thick waxy coating of cutin chemical substance with waterproof quality on its outer surface.
Reason (R): Desert plants, the epidermis has a thick waxy coating of cutin chemical substance with waterproof quality on its outer surface.
- ABoth A and R are true and R is the correct explanation of A
- ✓Both A and R are true but R is not the correct explanation of A
- CA is true but R is false
- DA is false but R is true.
Answer: B.
View full solution →Assertion (A): A gas can be easily compressed by applying pressure.
Reason (R): Since the inter-particle spaces in the gaseous state are very small, they cannot be decreased by applying pressure.
Reason (R): Since the inter-particle spaces in the gaseous state are very small, they cannot be decreased by applying pressure.
- ABoth A and R are true and R is the correct explanation of A
- BBoth A and R are true but R is not the correct explanation of A
- ✓A is true but R is false.
- DA is false but R is true
Answer: C.
View full solution →Assertion (A): When the displacement of a body is directly proportional to the square of the time. Then the body is moving with uniform acceleration.
Reason (R): The slope of velocity-time graph with time axis gives acceleration.
Reason (R): The slope of velocity-time graph with time axis gives acceleration.
- ABoth A and R are true and R is the correct explanation of A
- ✓Both A and R are true but R is not the correct explanation of A.
- CA is true but R is false
- DA is false but R is true.
Answer: B.
View full solution →What is the difference between cathode rays and canal rays. Why are canal rays called so?
A bullet of mass $5 g$ travelling at a speed of $120 ms^{-1}$ penetrates deeply into the fixed target and is brought to rest in $0.01 s.$Calculate: $(a)$ the distance of penetration in the target, $(b)$ the average force exerted on the bullet.
View full solution →An automobile vehicle has a mass of 1500 kg . What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of $1.7 ms^{-2}$ ?
View full solution →What is happen when solid ammonium chloride is heated?
What do you understand by loud and soft sound?
What is a permanent tissue? Classify permanent tissues and describe them.
a. Identify A and B cells.
b. What will happen if B cells are kept in hypotonic solution?
c. What will happen if A cells are kept in hypertonic solution?
Distinguish between Plant cell and Animal cells.
The speed-time graph of a car is given. The car weighs 1000 kg .
i. What is the distance travelled by car in the first 2 s ?
ii. What is the braking force applied at the end of 5 s to bring the car to stop within one second?
i. What is the distance travelled by car in the first 2 s ?
ii. What is the braking force applied at the end of 5 s to bring the car to stop within one second?
Shyam and his friends were playing with a catapult (gulel) in his garden. Several mangoes were dislodged and fell with the help of catapult. One of his friend was aiming the catapult on a bird. Shyam prevented him from doing so.
a. Name the energy possessed by the stretched string of the catapult.
b. What will happen if the stone is thrown without stretching the string of a catapult?
c. Why did Shyam prevent his friend from aiming at the bird? Which quality is highlighted in Shyam's behaviour?
a. Name the energy possessed by the stretched string of the catapult.
b. What will happen if the stone is thrown without stretching the string of a catapult?
c. Why did Shyam prevent his friend from aiming at the bird? Which quality is highlighted in Shyam's behaviour?
i. What factors affect the solubility of solvent and solute?
ii. State the differences between compounds and mixtures
ii. State the differences between compounds and mixtures
Draw a plant cell and label the parts which
i. determines the function and development of the cell
ii. packages materials coming from the endoplasmic reticulum
iii. provides resistance to microbes to withstand hypotonic external media without bursting
iv. is site for many biochemical reactions necessary to sustain life.
v . is a fluid contained inside the nucleus
i. determines the function and development of the cell
ii. packages materials coming from the endoplasmic reticulum
iii. provides resistance to microbes to withstand hypotonic external media without bursting
iv. is site for many biochemical reactions necessary to sustain life.
v . is a fluid contained inside the nucleus
Grass looks green, papaya appears yellow. Which cell organelle is responsible for this?
A stone is dropped from a $100 m$ high tower. How long does it take to fall?
$a.$ the first $50 m$ and
$b.$ the second $50 m .$
View full solution →$a.$ the first $50 m$ and
$b.$ the second $50 m .$
What is the magnitude of the gravitational force between the earth and a $1 \ kg$ object on its surface? $($Mass of the earth is $6 \times 10^{24} \ kg$ and radius of the earth is $6.4 \times 10^6 m )$.
View full solution →Read the following text carefully and answer the questions that follow:
Homogeneous mixtures are regarded as solutions or true solutions. Heterogeneous mixtures are of two types. These are suspensions and colloidal solutions. These differ in the size of the particles responsible for the difference in their properties. In a suspension, the particle size is more than $10^{-5} cm$ whereas in a colloidal solution, it ranges between $10^{-5} cm$ to $10^{-7} cm$. The two phases which constitute colloidal solutions, are dispersed phase and dispersion medium. Based upon their nature, the colloidal solutions are classified into eight types. The mixture of the nonreacting gases is always homogeneous irrespective of their nature. Therefore, it is not a colloidal solution.
i. Scattering of light occurs when a beam of light is passed through Blood. Why?
ii. What is Tyndall effect?
iii. What is called colloidal solution?
OR
Give an example of colloidal solution and identified their dispersed phase and dispersion medium?
View full solution →Homogeneous mixtures are regarded as solutions or true solutions. Heterogeneous mixtures are of two types. These are suspensions and colloidal solutions. These differ in the size of the particles responsible for the difference in their properties. In a suspension, the particle size is more than $10^{-5} cm$ whereas in a colloidal solution, it ranges between $10^{-5} cm$ to $10^{-7} cm$. The two phases which constitute colloidal solutions, are dispersed phase and dispersion medium. Based upon their nature, the colloidal solutions are classified into eight types. The mixture of the nonreacting gases is always homogeneous irrespective of their nature. Therefore, it is not a colloidal solution.
i. Scattering of light occurs when a beam of light is passed through Blood. Why?
ii. What is Tyndall effect?
iii. What is called colloidal solution?
OR
Give an example of colloidal solution and identified their dispersed phase and dispersion medium?
Read the following text carefully and answer the questions that follow:
Culture fishery is rearing and harvesting of fish in small water bodies. The best method of culture fishery is composite fish culture, Here, fishes are selected on the basis of their growth rate, palatability, area of feeding and tolerance towards others. All of them have their exclusive zone and type of feeding. There are three zonessurface, middle zone and bottom. Each zone can have 2 or even 3 feeding options.You have studied the various fishes that can be accomodated in different zones of pond culture.
i. How many fishes can be accommodated at the bottom zone?
ii. What types of fish can occur on the surface zone of fresh water fish ponds?
iii. Where is fish Catla found in a fresh water culture pond?
OR
Which fish feeds on filamentous algae and decaying vegetation?
Culture fishery is rearing and harvesting of fish in small water bodies. The best method of culture fishery is composite fish culture, Here, fishes are selected on the basis of their growth rate, palatability, area of feeding and tolerance towards others. All of them have their exclusive zone and type of feeding. There are three zonessurface, middle zone and bottom. Each zone can have 2 or even 3 feeding options.You have studied the various fishes that can be accomodated in different zones of pond culture.
i. How many fishes can be accommodated at the bottom zone?
ii. What types of fish can occur on the surface zone of fresh water fish ponds?
iii. Where is fish Catla found in a fresh water culture pond?
OR
Which fish feeds on filamentous algae and decaying vegetation?
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