A ray of light is travelling in a direction perpendicular to the boundary of a parallel glass slab. The ray of light:. A Is refracted towards the normal B Is refracted away from the normal. C Is reflected along with the same path D Does not get refracted.
A lens of focal length 12 cm forms an erect image, three times the size of the object. The distance between the object and image is:. An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the original and final images seen in the mirror is:.
The star appear shifted from their actual position due to the phenomenon of:. Blue colour of the sky is due to the phenomenon of:. In which of the following group groups of organisms, blood flows through the heart only once during one cycle of passage through the body? Which of the following correctly represents a balanced chemical equation?
The pH of a solution changes as we add excess of acid to an alkali. Which letter denotes the area of the graph where both acid and salt are present? Which option in the given table correctly represents the substance oxidised and the. Reducing agent? Substance oxidised. Reducing agent. What is common between extensive network of blood vessels around wall of alveoli and in glomerulus of nephron? A Thick walled artery richly supplied with blood B Thin walled veins poorly supplied with blood.
C Thin walled capillaries poorly supplied with blood D Thin walled capillary is richly supplied with blood. If a virtual, erect and enlarged image is formed by a lens, then which of the following options are correct? A It is a concave lens and the object is placed between pole and focus. B It is a convex lens and the object is placed between focus and centre of curvature.
C It is a convex lens and the object is placed between pole and focus. D It is a concave lens and the object is placed between focus and centre of curvature.
Mark the correct choice as. C A is true but R is false. D A is false and R is true. Assertion : Phenolphthalein gives pink colour in basic solution. Reason : Phenolphthalein is a natural indicator.
Assertion : Although bile juice has no digestive enzymes it is still considered to be very important during Digestion of food. Reason : Bile provide alkaline medium and emulsifies fat. Assertion : Resins and gums are stored in old xylem tissue in plants. Reason : Resins and gums facilitate transport of water molecule.
Assertion : fresh milk in which baking soda is added, takes a longer time to set as curd. Reason : Baking soda decreases the pH value of fresh milk to below 6. Predict the pH value of the water of river Yamunaif the reason for froth is high content of detergent dissolved in it. Which of the following statements is correct for the water with detergents dissolved in it? Which of the following correctly represents the solutions in increasing order of their hydronium ion concentration?
High content of phosphate ion in river Yamunamay lead to:. A Decreased level of dissolved oxygen and increased growth of algae. B Decreased level of dissolved oxygen and no effect of the growth of algae. C Increased level of dissolved oxygen and increased growth of algae. D Decreased level of dissolved oxygen and decreased growth of algae.
If a sample of water containing detergents is provided to you, which of the following methods will you adopt to neutralize it? A treating the water with baking soda B Treating the water with vinegar.
C Treating the water with caustic soda D Treating the water with washing soda. Amoeba is an animal having no fixed shape. The food vacoule inside amoeba breaks down the food into small and soluble molecules. The digested food is thrown out by the amoeba by the rupture of cell membrane and it goes on for the search of the next food particle.
Amoeba belongs to which group of microorganisms? What are the temporary projections made in amoeba called? What type of nutrition is followed by amoeba? As we move above the surface of earth, density of air goes on decreasing.
Local conditions like temperature etc. On account of atmospheric refraction, stars seen appear higher than they actual are; advanced sunrise; delayed sunset, oval appearance of the sun at sunrise and sunset; stars twinkle, planets do not.
Due to atmospheric refraction, apparent length of the day A increases B decreases C remains the same D all of these. Apparent position of the star appears raised due to A atmospheric refraction B scattering of light C both a and b D none of these.
The sun appears oval shaped or flattened due to A dispersion B scattering C atmospheric refraction D cannot say. Twinkling of stars and non-twinkling of planets is accounted for by A scattering of light B dispersion of light C atmospheric refraction D none of these. In absence of atmosphere, the colour of sky appears A blue B black C red D yellow.
Assertion : Sky appears blue in the day time. Reason : White light is composed of seven colours. Click Here to download pdf. If you want Class 10 Science Term 1 Sample paper in Doc or word format, mention in the comments. Home About Contact. The mole ratio of hydrogen and oxygen gases liberated during electrolysis o water is A B C D 1. The organicacidpresentintomatois: A oxalic acid B lactic acid C malic acid D tartaric acid 5.
Bleachingpowdergives smell of chlorine because it- A is unstable B gives chlorine on exposure to atmosphere C is a mixture of chlorine and slaked lime D contains excess of chlorine 6. CBSE Class Follow Me. Most Popular. Download our app. You can help. Scan code with any UPI app to make donation. Report Abuse. Featured post. Popular Posts. Total Pageviews. Privacy Policy. Previous Year Papers. Footer Menu Widget. Home About Contact Us.
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