Full Marks 90
Question : 1 - What is an ester?
Answer:- (b) A sweet smelling organic compound
Question : 2 - What is the functional group in aldehyde?
Answer: (c) -CHO
Question : 3 - Write the formula of an alkane which has 10 carbon atoms.
Question 4 - What is a foetus?
Answer: (b)When the embryo resembles an adult animal
Question 5 - What do you understand by direct development in organisms?
Answer: When the young animal looks like the adult animal; the development from young to adult is called direct development.
Question 6 - Give two examples of oviparous mammals.
Answer: Duck, Lizard
Question 7 - What do you understand by haploid number of chromosomes?
Answer: The number of chromosomes is half in gametes and this condition is called haploidy.
Question 8 - Define irregular reflection.
Answer: When parallel rays of light reflect from an uneven surface, the reflected rays are not parallel to each other. This condition is called irregular reflection.
Question 9 - What is a lens?
Answer: A lens is a piece of refractive substance which is bound by at least one spherical plane.
Question 10 - If an object is at F, what will be the location of image in case of a convex mirror?
Answer: The image is formed behind the mirror and between F and P of the mirror.
Question 11 - If an object is at 2F, what is the location of image in case of a concave lens?
Answer: In this case, image is formed between F and O and on the same side of the lens.
Question 12 - Which type of mirror is used by dentists to see enlarged image of a tooth.
Answer: Concave mirror
Class ten Science - Sample Paper - (1) for SA - 2 - Part - I will be available online in PDF book form soon. The solutions are absolutely Free. Soon you will be able to download the solutions.