When you paddle a canoe, the canoe goes forward. This is an example of _______

An object is placed at 12 cm from a convex lens whose focal length is 10 cm. The image must

Thermal expansion at particular temperature is less in

A 110 W, 220 V bulb draws a current.

Ultrasound waves compared to audible sound waves have.

૪ rays are ________ in charge.

Volume of a gas at STP is 1.12 x 10^-7 cc Calculate the number of molecules in it:

As the positive charge increases, the size of the cation _________

The solubility of gases in liquid increases with ____________

Chemically rust is

Ethanol is used as ______________

Mitochondria was discovered by ___________

The third Ventricle in brain of Rabbit lives in______

Identify the wrong statement

_____ is an inflammation of the meninges.

_____ is a gaseous plant hormone.

The pollen is produced in________

The sex chromosomes in a human cell refer to the______

_______ is the only planet in the Goldilock zone for life.

Dr. M. S. Swaminathan did experiments in _________.

____________ is not a symptom of AIDS.

There are______ biosphere reserves in India.

Notes can be collected, edited and printed using______

Define 1 dyne.

Define Resolving power of a Telescope.

What are the changes that will occur when heat energy is given to a substance?

How does a parallel circuit differ from a series circuit?

Why does sound wave travel faster in solids?

What is meant by
(i) Sub critical
(ii) Super critical

Measurement of atomic mass of an element is very difficult? Give reason.

What is the significance of modem periodic table?

What is water of crystallization?

Define a catalyst.

What does TFM refer?

List the functions of mitochondria.

Explain respiratory system of a rabbit.

Differentiate open type and dosed type of circulation.

When we touch a cactus unknowingly, we get pricked by the thorns. We withdraw our hands immediately. Which type of neuron gets activated first.

What would happen if the parathyroid gland was removed?

What is gametogenesis?

State the law of purity of gametes or the law of segregation.

What is Geologic time scale.

Mention two characteristics of stem cells.

What is cancer.

List out the advantages of tidal energy.

Write a short note on script editor.

Derive the Relation between g and G?

Explain Raman Scattering.

With an illustration, explain the method of Calculation for cubical expansion of an object.

Kalaivani was watching at a metal pipe, one end of which is connected to a tank at the top of her building and the other end to the tap, which is near the ground level. She was admiring how the water flows from top to the bottom through the pipe. She went and asked her mother, who was an engineer.
(i) Also Kalaivani asked her mother that can she able to compare this with any other scientific concepts?
(ii) How would her mother have compared the resistance in a water pipe as well as in a conductor.
(iii) Give the expression for resistors connected in series and parallel.

(i) How to analyse the planets are irregular shaped?
(ii) What is the method used to find it?
(iii) Planets are sensitive to different frequencies Justify.

Explain the principle & structure of atom bomb.

How will you determine the atomicity of gases using Avogadro's hypothesis?

Explain the variation of electronegativity down a group and across a period.

Write some solubility substances in water at 25°C.

Explain the classification based on the direction of the reaction.

What are the advantages of detergents over soaps?

Can Human beings survive with anaerobic respiration - Justify.

Is hirudin used in medical science.

Write a note an ABO blood grouping.

Differentiate simple reflexes and conditional reflexes.

Explain the role of growth hormone produced by pituitary gland.

My friend Manisha received a marriage proposal from a boy living abroad. Before they met and finalised the wedding, Manisha requested her parents to get the boy's blood test report.
(i) Do you think blood test report is necessary for both boy & girl?  
(ii) Do you think, blood test report is not " necessary for the boy living in India?

Mala had a huge scar on her cheek after she met with fire accident during her college days. She is worried if her baby would inherit the scar she had acquired. She clarified with her doctor, she need not worry about it, as her scar is an acquired trait.
(i) What are acquired traits?
(ii) How is it different from inherited traits?

Two kittens (Leo and Joe) from the same mother were separated and sent to different habitual conditions. Leo was sent to a high mountain wild region and Joe was domesticated and lived in a city. After a good 5 years) it was found that Leo was aggressive and built strong with hunting skills. Leo looked tall with strong legs and muscled structure) whereas Joe was a well mannered cat looked puffy with soft legs.
(i) Do you think habitual condition impact animal characters?
(ii) What acquired characters does Leo inherit?
(iii) Is it true but Leo's offspring would be a hunter?

Plants seeds got from other countries are tested in plant quarantine. Reason out.

Write a note an prevention and control of AIDS.

What are the solutions suggested for disposal of e-wastes for companies / Organizations?

In a biology period, the teacher drew the heart of rabbit on the board and explained its structure and functions. After the class, your friend told you that he finds it difficult to understand the concept and felt he wanted a detailed explanation.
(i) In what way the teaching can be made easily understandable?
(ii) Do you think using technologies like Visual Communication help students to understand the difficult concepts in a simple way?
(iii) By what means the Visual Communication improve the learning ability?

A body of mass 20 x 10^-3 kg when acted upon by a force for 4 second, attains a velocity of 100 m/s. If the same force is applied for 2 minutes, on a body of mass 10 kg at rest, what will be its velocity?

A convex lens of power +6D and a concave lens of power -4D are combined together (in contact). Find the power of the combination of two lenses.

An aluminium sheet of length 30 m is made into cone for temperature range ΔT = 300 k. Find the change in length of AI sheet?

What is the resistance of heating element of the heater when 20 A current passing through it at a potential of 220 V?

What is the frequency heard by a stationary observer when a train approaches with a speed of 30 ms^-1. The frequency of the train is 600 Hz and the speed of sound is 340 m/s?

In the equation ₆C¹⁴⟶ ₇N¹⁴+_-1e⁰ which decay of radioactive carbon-14 results in the new nitrogen - 14 atom.

Find the mass of 2.5 mole of oxygen atom.