Indian All Education Board Solution
Garbage in, Garbage out Chapter 16 Exercises (অনুশীলনী) Ans:- Red kesu cannot convert waste items such as salt foods, pickles, oil, vinegar, meat and foods made of milk into manure. (b) Have you seen any other organism besides redworms, in your pit? If yes, try to find out their names. Draw pictures of these. Ans:-…
Air Arounds Us Chapter 15 Exercises Ans:- The components of air are nitrogen, oxygen, carbon dioxide, water vapor, other gases and dust particles. Ans:- Oxygen gas. Ans:- A candle was placed in the middle of a shallow pot the candle was lit. Now the candle that is burning in the container has been covered with…
Water Chapter 14 অনুশীলনী (Exercises) (a) The process of changing of water into its vapour is called _ . Ans:- Evaporation. (b) The process of changing water vapour into water is called _ . Ans:- Condensation. (c) No rainfall for a year or more may lead to __ in that region. Ans:- Drought. (d) Excessive…
Fun with Magnets Chapter 13 Exercises (i) Artificial magnets are made in different shapes such as _ and . Ans:- Bar magnet, Horse-cavalry magnet. (ii) The Materials which are attracted towards a magnet are called __ . Ans:- Magnetic material. (iii) Paper is not a __ material. Ans:- Magnetic. (iv) In olden days, sailors used…
Electricity and Circuits Exercises (a) A device that is used to break an electric circuit is called _ . Ans:- Switch. (b) An electric cell has __ terminals. Ans:- Two. (a) Electric current can flow through metals. Ans:- True. (b) Instead of metal wires, a jute string can be used to make a circuit. Ans:-…
Light, Shadows and Reflections Chapter 11 Exercises OWS AKE OPAQ UEO BJEC TSM SHAD Ans: OPAQ UEO BJEC TSM SHAD OWS Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, a piece of red hot iron,…
Motion and Measurement of Distances Chapter 10 Exercises (অনুশীলনী) Ans:- Soil- buses and trains. Water- boats and ships. Air- aircraft and helicopters. (i) One metre is _ cm. Ans:- 100. (ii) Five kilometre is __ m. Ans:- 5000. (iii) Motion of a child on a swing is __ . Ans:- Periodic motion. (iv) Motion of…
The Living Organisms and Their Surroundings Chapter 9 Exercises (অনুশীলনী) Ans:- The environment in which plants or organisms live is called their habitat. Ans:- Plants in the desert do not have leaves and are very small and in the form of thorns. It also helps in reducing the amount of water released from the leaves…
Class 4 Chapter 3 Solution শরীর Very Short Quetion Answer ১। হাতি কী খায়? উত্তর: কলাগাছ। ২। গোরু কী খায়? উত্তর: গোরু ঘাস, খড়, বিচালি খায়। ৩। প্রজাপতি কী খায়? উত্তর: ফুলের রস। ৪। কুকুর কীভাবে খাবার খায়? উত্তর: কুকুর দাঁত দিয়ে কামড়ে খায়। ৫। ব্যাং কী খায়? উত্তর: পোকামাকড় খায়। ৬। দিনে ক’বার দাঁত…
Body Movements Chapter 8 Exercises (অনুশীলনী) (a) Joints of the nones help in the of ————— the body. Ans:- Movement (b) a combination of bones and cartilages forms the —————- of the body. Ans:- jaws. (c) The bones at the elbow are jhoined by a —————— joint. Ans:- Hinge. (d) The contraction of the ——————-…