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Explore Class 10 Compulsory Science and Technology past and model questions by chapter, year, marks and question type.
322 questions found
Study the given diagram
'It is good to use traditional and chemical-free method to ripen fruits.' Give any two arguments to support this statement.
Write any one balanced chemical equation of a reaction that uses a catalyst.
Nowadays, Facebook messenger is used for talking with friends through social media.
A charger has a transformer which reduces supply voltage from 220 V to 5 V. Calculate the ratio of number of turns in the primary coil to that of the secondary coil.
Draw a labelled diagram of strands of cell having hereditary characters with nitrogen bases.
The given circuit diagram is used for the electrorefining of a metal which is extracted from Argentite ore. Identify the two main errors in this circuit.
Your friend needs a strength-enhancing medicinal herb. In this situation, which herb would you advise your friend to use? Write down any one method of conservation of this medicinal herb.
Between the top of the mountain and its base, where will an object weigh more? Write with reason.
What type of cell division takes place during the formation of gametes?
What is the gravitational force of attraction between these two heavenly bodies? In which condition, gravitational force of attraction is equal to gravitational constant?
Test the validity of by unit-wise analysis.
Write any two characteristics of the division of Marchantia.
Write the balanced chemical equation when dust formed by burning magnesium ribbon is added to water.
In the given graph of future of the universe, what type of universe does 'B' represent?
Which theory is closely related to Hubble's study?
i. Heliocentric theory
ii. Geocentric theory
iii. Big-Bang theory
iv. Hubble's theory
Though males have both and sex chromosomes, some of them have only sons and some have only daughters. Why? Write with reason.
Write any two ways to increase the induced current in a dynamo.
Write the differences between alkane and alkyne on the basis of number of bonds and general molecular formula.
State the law of pressure that can be verified by the given figure.
