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Popular Questions
- Using s, p, d, f notations, describe the orbital with the following quantum numbers:
- A microscope using suitable photons is employed to locate an electron in an atom within a distance of 0.1 Å. What is the uncertai..
- What kind of a person do you think the narrator is?
- If you were to write about these issues today what are some of the incidents, examples and problems that you would think of as rel..
- This play, written in the 1950s, is a humorous and satirical depiction of the status of the mother in the family.
- Calculate energy of one mole of photons of radiation whose frequency is 5 ×1014 Hz.
- The story is divided into pre-War and post-War times. What hardships do you think the girl underwent during these times?
- You will probably agree that this story does not have breathless adventure and exciting action. Then what in your opinion makes it..
- How many neutrons and protons are there in the following nuclei ?
- What different criteria would you choose to classify people that you meet often?
- Calculate the mass of a photon with wavelength 3.6 Å
- (i) Calculate the number of electrons which will together weigh one gram.
- What is the total number of orbitals associated with the principal quantum number n = 3 ?
- How is a key helpful in the identification and classification of an organism?
- Indian society has moved a long way from the way the marriage is arranged in the story. Discuss
- Why are living organisms classified?
- How do you distinguish between information gathering and insight formation?
- Calculate the energy associated with the first orbit of He+ . What is the radius of this orbit?
- Why did the narrator of the story want to forget the address?
- List some key contemporary areas of science and technology, which are responsible for this revolution.
- The story revolves around characters who belong to a tribe in Armenia.
- ‘Have you come back?’ said the woman. ‘I thought that no one had come back.’ Does this statement give some clue about the ..
- Calculate (a) wavenumber and (b) frequency of yellow radiation having wavelength 5800 Å.
- How, if at all, will you resolve your dilemma ?
- Determine graphically and otherwise how long the drunkard takes to fall in a pit 13 m away from the start.
- What will be the wavelength of a ball of mass 0.1 kg moving with a velocity of 10 m s–1 ?
- Astrologers’ perceptions are based more on hearsay and conjecture than what they learn from the study of the stars. Comment with..
- The mass of an electron is 9.1×10–31 kg. If its K.E. is 3.0×10–25 J, calculate its wavelength.
- What do you understand of Einstein’s nature from his conversations with his history teacher, his mathematics teacher and the hea..
- Given below is the scientific name of Mango. Identify the correctly written name.
- Try to collect all the currently accepted meanings for the word ‘species’. Discuss with your teacher the meaning of species in..
- A golf ball has a mass of 40g, and a speed of 45 m/s. If the speed can be measured within accuracy of 2%, calculate the uncertaint..
- Comment on the influence of English— the language and the way of life — on Indian life as reflected in the story. What is the ..
- How will you use your knowledge of science to develop strategies to counter these attitudes ?
- Though the law gives women equal status in India, many people hold unscientific views on a woman’s innate nature, capacity and i..
- Calculate energy of one mole of photons of radiation whose frequency is 5 ×1014 Hz.
- Write in about 1000 words a fiction piece based on your speculation on the science and technology of the twenty-second century.
- Choose suitable scales and plot the x-t graph of her motion.
- Is unit test matter in class 11th (CBSE board)?
- The Vividh Bharati station of All India Radio, Delhi, broadcasts on a frequency of 1,368 kHz (kilohertz).
