NCERT Exemplar Problems Class 9 Science – Tissues Question 1: Which of the following tissues has dead cells? (a) Parenchyma (b) Sclerenchyma (c) Collenchyma (d) Epithelial tissue Answer: (b) Sclerenchyma cells are the permanent tissues present in the plants. They provide hardness and stiffness to the plant and are composed of dead cells. This tissue…
Read more
NCERT Exemplar Problems Class 9 Science – The Fundamental Unit of Life Question 1: Which of the following can be made into crystal? (a) A bacterium (b) An Amoeba (c) A virus (d) A sperm Answer: (c) Viruses are considered as an intermediate between living and non-living cells because they cannot metabolise and reproduce on…
Read more
NCERT Exemplar Problems Class 9 Science – Structure of the Atom Question 1: Which of the following correctly represent the electronic distribution in the Mg atom? (a) 3, 8,1 (b) 2, 8, 2 (c) 1,8, 3 (d) 8, 2, 2 Answer: (b) Atomic number and the number of electrons in magnesium atom is 12.…
Read more
NCERT Exemplar Problems Class 9 Science – Atoms and Molecules Question 1: Which of the following correctly represents 360 g of water? (i) 2 moles of H20 (ii) 20 moles of water (iii) 022 x 1023 molecules of water (iv) 12044 x 1025 molecules of water (a) only (i) (b) (i) and (iv) (c) (ii)…
Read more
NCERT Exemplar Problems Class 9 Science – Is Matter Around us Pure Question 1: Which of the following statements are true for pure substances? (i) Pure substances contain only one kind of particles. (ii) Pure substances may be compounds or mixtures. (iii) Pure substances have the same composition throughout. (iv) Pure substances can be exemplified…
Read more
NCERT Exemplar Problems Class 9 Science – Matter In Our Surroundings Question 1: Which one of the following sets of phenomena would increases on raising the temperature? (a) Diffusion, evaporation, compression of gases (b) Evaporation, compression of gases, solubility (c) Evaporation, diffusion, expansion of gases (d) Evaporation, solubility, diffusion, compression of gases Answer: (c)…
Read more