Newton's law of gravitation applies to

As compare to single lens, compound microscope gives ______ magnification

SI unit of temperature is ______

Which options show the correct direction of current?

What does it mean when a wave's amplitude increases?

Radio - carbon dating can be done with _________.

The total number of electrons present in 16 g of methane gas is

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

White vitriol is ________

An element 'A' on exposure to moist air turns to form compound 'B' which is reddish brown. Identify 'A' and 'B'.

Ethanol is used as ______________

Leucoplasts are __________ plastids.

The_______ on both sides join to form the genital atrium in leech.

_______is not a feature of osmosis 

Sneezing, yawning etc are examples of _______

_____ is a gaseous plant hormone.

_______from anterior pituitary stimulates milk secretion

______is not a nitrogenous base.

_________ is called the Father of Palaeontology.

In human beings, _________ of the DNA base sequences are the same and this is called as bulk genomic DNA.

______________ is not related to NIDDM.

__________is not obtained from petroleum.

Which button is presses to run the script?

Why does the recoil of a heavy gun on firing not so strong as of a light gun using the same cartridges?

Write the uses of simple microscope.

State Charles's law (or) Write the law of volume.

What is MCB?

Define frequency of a sound wave.

Why nuclei fusion is called thermonuclear reaction?

Define Vapour density.

Name a metal that can be cut with a knife.

Calculate the percent by mass of glucose in a solution made by dissolving 500 g of glucose in 50 g of water.

Write the chemical equations for the following and identify the type of chemical reactions
i) Burning of magnesium in air
ii) Electric current is passed aqueous solution of sodium chloride
iii) Ammonium hydroxide reacts with nitric acid

What is saponification?

List the functions of chloroplast.

Explain respiratory system of a rabbit.

Though human are heterogeneous in external dimension and colour. The colour of blood is identical. Give reason. 

How are neurons classified based on function.

List the functions of adrenal medulla hormones.

What is egg apparatus?

State the Law of Independent Assortment

Explain Biogenesis.

Write a note on Triticale.

What is AIDS?

Name two organisations involved in conservation of wild life.

Write a short note on script editor.

Give the application of torque.

Write the sign convention for lenses.

With an illustration, explain the method of Calculation for areal 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.

Explain the working and use of SONAR?

Distinguish between Nuclear fission and nuclear fusion.

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

What are the methods of preventing corrosion?

Write some solubility substances in water at 25°C.

Explain the classification based on the direction of the reaction.

How will you classify organic compounds based on the pattern of carbon chain?

Write a note on vascular tissue system.

Man is a mammal and has incisors and canine. Rabbits are mammals but lack canines. Explain.

List the difference between RBC and WBC.

'A' contains a cerebrospinal fluid filled cavity known as 'B'. How many nerves are produced from A.
(i) What is A?
(ii) What is 'B'?

In botanical gardens and tea gardens the gardeners trim the plants regularly so that they remain bushy. Write the scientific explanation of this practice.

Describe the structure of human sperm.

Write a note on mutation.

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?

Write a essay on polyploidy breeding.

Explain the hazards and effects of Tobacco.

Reena lives in a apartment. She would like to contribute to afforestation. What can she do?

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?

Two bodies have masses in the ratio 2 : 3 when a force is applied on first body, it moves with an acceleration of 6 ms^-2, How much acceleration will be the same force produce in the other body?

Speed of light in glass is 2 x 10⁸ ms^-1. Find the refractive index of glass.

If boiling point of water is 95°F, What will be the reading in kelvin scale?

Determine the following quantities of the given equivalent.
(i) The equivalent resistance
(ii) Total current through the circuit
(iii) The current through each resistor
(iv) Voltage drop across resistor
(v) Power dissipated in each resistor

R₁ = 20Ω; R₂ = 100Ω; R₃50Ω; V  = 125V

Find the speed of sound in air at 9.23° C.

Solve this equation for ∝ - decay.
₈₈Ra²²⁶ ➝Rn+________

Calculate the number of molecules in 11g of CO₂