पी 509 ए रोहिणी, दिल्ली। दिनांक 20. 6. 2017 प्रिय सखी रेखा, सप्रेम नमस्ते। आज ही बोर्ड की सीनियर सैकेण्डरी परीक्षा परिणाम घोषित हुआ और तुम्हारा चित्र सभी समाचार पत्रों के मुख्य पृष्ठ पर छपा हुआ था, जिससे ज्ञात हुआ कि इस परीक्षा में तुमने सर्वोत्तम अंक प्राप्त किये हैं। …

बी – 775 ए, मोती नगर, नई दिल्ली। दिनांक 28. 6. 2017. प्रिय सखी गीता, प्रसन्न रहो। आज ही तुम्हारा जन्म-दिन का निमन्त्रण पत्र प्राप्त हुआ। पढ़कर बहुत प्रसन्नता हुई। भगवान तुम्हें शतायु करें और यह दिन तुम्हारे जीवन में बार-बार खुशियाँ लेकर आए। यह दिन बहुत शुभ होता है। …

Question: Explain how soil is formed. Answer: Soil is formed through the process of weathering. Weathering is a process of physical breakdown and chemical decomposition of rocks and minerals near or at the surface of the earth. This physical and chemical decomposition is primarily done by wind, water, and climate. As …

NCERT 7th Class (CBSE) Science: Soil – Quiz 11 Multiple Choice Questions related to NCERT 7th Class (CBSE) Science: Soil – Quiz: Reduce the use of plastics: Plastics and polythene bags destroy the fertility of soil. Hence, these should be disposed off properly and if possible, their use should be …

Question: Why is transport of materials necessary in a plant or an animal? Explain. Answer: Transport of materials is necessary for plants or animals because due to it the nutrients and oxygen are made available to all the parts of the body. If the transport of necessary nutrients and oxygen does …

NCERT 7th Class (CBSE) Science: Electric Current and its effects – Quiz 32 Multiple Choice Questions related to NCERT 7th Class (CBSE) Science: Electric Current and its effects – Quiz: An electric Circuit is a continuous conducting path for electric current. If current flows from point A to point B …

NCERT 7th Class (CBSE) Science: Respiration in Organism – Quiz 21 Multiple Choice Questions related to NCERT 7th Class (CBSE) Science: Respiration in Organism – Quiz: In yeast, the cellular glucose is converted into alcohol and carbon dioxide which give us energy. Stomata apparatus means stomata along with nearby guard …

Question: What do you mean by ‘stomata’ apparatus? Answer: Stomata apparatus means stomata along with nearby guard cells and other cells. Question: What are the main organs of the respiratory system? Answer: Main organs that help in respiration are : Nostrils (The passages in the nose) Trachea (Windpipe) Bronchi Lungs Question: …

NCERT 7th Class (CBSE) Science: Winds, Storms and Cyclones – Quiz 15 Multiple Choice Questions related to NCERT 7th Class (CBSE) Science: Winds, Storms and Cyclones – Quiz: The air get heated the molecules expand and get away from each other and the air becomes less dense. After reaching the …

NCERT 5th Class (CBSE) Science: Measurement – Quiz 15 Multiple Choice Questions related to NCERT 5th Class (CBSE) Science: Measurement – Quiz: The speed of a thing tells us how much distance it travels in a given unit of time. Density is the amount of mass contained in a unit …