Class 9 Olympiads

iOS Official sample paper - 35 questions: Q1) Which one of the following shows that cathode rays are negatively charged particles? (A) Cathode rays produce greenish light on striking the wall of discharge tube. (B) Cathode rays cast shadows of the objects placed in their path. (C) Cathode rays move the blades of a paddle wheel placed in their path. (D) Cathode rays are deflected towards the positive plate of an electric field

ICAS Science sample paper - 35 questions: Q1) Sirius is a white star which has a surface temperature of 10000 °C. Its spectrum has hydrogen but no strong metallic lines. What class of star is Sirius?.

NSTSE Official sample paper - 35 questions: Q1) How is Brownian motion caused ? (A) Through temperature fluctuations within the liquid phase. (B) Through attraction and repulsion between the charges on the colloidal particles. (C) Through collision of molecules between the colloidal particles. (D) Through pressure variations within the liquid phase

NISO Official sample paper - 35 questions: Q1) An aqueous solution at room temperature was heated and some more solute was added to it. It was observed that after sometime solution could not dissolve any more of the solute. The solution is then cooled. The solution now formed is called _____.

Improvement in Food Resources - 35 questions: Q1) Statement A: Pesticides used for spraying are not volatile. Statement B: Fumigants are volatile. Which of the two statement is true?

Natural resources - 35 questions: Q1) Statement A: Ozone hole was first noticed over Antarctica in 1985. Statement B: Xenobiotic are man – made substances which can easily be degraded by natural process. Which of the two statement is true?

Why do we fall ill? - 35 questions: Q1) Choose the correct statement(s)- A. High blood pressure is caused by excessive weight and lack of exercise. B. Cancers can be caused by genetic abnormalities. C. Peptic ulcers are caused by eating acidic food. D. Acne is not caused by staphylococci

Diversity in Living Organisms - 35 questions: Q1) Which of the following is not the flight adaptation in birds? Q2) Respiration in arthropods occurs through A - Trachea, B - Booklungs, C - Gills, D - Skin 

Tissues - 35 questions: Q1) Find out correct sentence: A - Parenchymatous tissues have intercellular spaces. B - Collenchymatous tissues are irregularly thickened at corners. C - Apical & intercalary meristems are permanent tissues. D - Meristematic tissues, in its early stage, lack vacuoles 

Cell-The Fundamental Unit of Life - 35 questions: Q1) Statement A : The secretary proteins are packed inside the secretory vesicles which are pinched off from the Golgi apparatus. Statement B : ER is absent in the red blood cells of mammals. Which of the two statements is true?

Structure of the atom - 35 questions: Q1) If K and L shells of an atom are full, then what would be the number of electrons in the atom? Q2) Which of the following element have same valency? A - An element with atomic number 12,  B - An element with atomic number 6, C - An element with atomic number 4, D - An element with atomic number 2

Atoms and molecules - 35 questions: Q1) An element X has valency 3 while the element Y has valency 2 write the formula of the compound between X and Y. Q2) Sample of water from a well was analyzed. What will be the ratio of hydrogen and oxygen in it by mass?