Sujeet Kumar

Question 1.The number √2 is shown on a number line. Steps are given to show √3 on the number line using √2. Fill in the boxes properly and complete the activity. The point Q on the number line shows the number ……….A line perpendicular to the number line is drawn through the point Q. Point … Read more

Question 1.Write the following rational numbers in decimal form. Image Insert an image to make a visual statement. Styles DefaultRounded Settings ii. 15/42 iii. 9/14 iv. -103/5

Textbook Questions and Answers Question a.Prepare a questionnaire for a visit to a NGO working for cleanliness of marine beaches.Answer:A questionnaire for a visit to a NGO working for cleanliness of marine beaches is as follows : Field trip: Report writing: Field trips help in enhancing the understanding and sensitivity about the historical, economic, social, … Read more

1. Write the proper words in the blanks:(meridian, horizon, twelve, nine, apparent, celestial, ecliptic) Question a.When seen from a great distance, the sky seems to be touching the ground along a circle. This circle is called the …………… .Answer:horizon Question b.The ………….. is used while defining the zodiac sign.Answer:meridian Question c.Classified according to seasons, one … Read more

Textbook Questions and Answers 1. Write the appropriate terms in the blanks: Question a.The alloys called …………. and …………. are used for making industrial magnets.Answer:alnico, Nipermag Question b.A magnetic field can pass through ………… and …………. .Answer:cardboard, bottle Question c.The intensity of a magnetic field is indicated by the lines of …………. .Answer:force Question d.The … Read more

Textbook Questions and Answers 1. Fill in the blanks: Question a.Sound is generated by the rhythmic ……………. of any object.Answer:vibrations Question b.The frequency of sound is measured in …………….. .Answer:Hertz (Hz) Question c.If …………….. of sound is decreased its loudness also decreases.Answer:intensity Question d.A medium is necessary for …………… of sound.Answer:generation 2. Match the pairs. … Read more

Textbook Questions and Answers 1. Fill in the blanks. Question a.When the beams from the headlights of a car fall on an object in the night, the shadows – called ………. and ………… . can be seen.Answer:umbra, penumbra Question b.During a lunar eclipse the shadow of the …………. falls on the ………. .Answer:earth, moon Question … Read more

1. Describe natural resources with reference to the following 3 types: Question a.Mineral resourcesAnswer:Mineral wealth has an important place among natural resources. The rocks on the earth are mainly made of minerals. These minerals can be obtained by mining. Minerals that contain a high proportion of metals are ores, (i) Minerals are formed from the … Read more

1. Fill appropriate terms in the blanks:(white cement, soap, detergent, wearing of bones, tooth decay, hard, soft, portiand, fatty acid) Question a.The substance that helps water to remove dirt from the surface of material is called …………… .Answer:soap Question b.Fluoride is used in toothpaste to prevent …………… .Answer:tooth decay Question c.Soap is a salt of … Read more

1. Who are my companions? Question a. Column ‘A’ Column B’ 1. Stainless steel a. Non-metal 2. Silver b. Compound 3. Bhajani mixture for milling c. Mixture 4. Salt d. Element 5. Coal e. Alloy 6. Hydrogen f. Metal Answer: Column ‘A’ Column B’ 1. Stainless steel e. Alloy 2. Silver f. Metal 3. Bhajani … Read more