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Ask QuestionPosted by Gayatri Das 5 years, 6 months ago
- 3 answers
Vinayak Agrawal 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
Steps to test the presence of starch in leaves :
Step 1: A fresh leaf is taken.
Step 2: The leaf is boiled in water for few minutes to soften the cells in the leaf.
Step 3: Now, dip this leaf in iodine solution.
Step 4: The color of the leaf will changes into blue black color when iodine is added to it which shows the presence of starch in it.
Posted by My Cricket 5 years, 6 months ago
- 5 answers
Vinayak Agrawal 5 years, 6 months ago
Gaurav Seth 5 years, 6 months ago
Silk is the strongest natural fibre. Sericulture means 'silk farming'. The rearing of silkworms for obtaining silk is called sericulture. Sericulture is a very old occupation in India.
Posted by Pushpa Aswath 5 years, 6 months ago
- 2 answers
Yogita Ingle 5 years, 6 months ago
Plants do not have a digestive system because their need for nourishment is fulfilled through the process of photosynthesis and cellular respiration. They obtain their energy and and nutrients from the energy of the sun to create their supply to live. Therefore using characteristics such as the sun and water their physical nature does not allow them to rely on a digestive system to obtain their need for energy, when their need is supplied almost directly for the sun.
Kritika Pal 5 years, 6 months ago
Posted by Riya ... 5 years, 6 months ago
- 2 answers
Yogita Ingle 5 years, 6 months ago
- Take a clinical thermometer and hold it horizontally with reading scale towards your eye.
- Do not hold the thermometer from the bulb.
- Rotate the thermometer slightly clockwise and anticlockwise. By doing this you will see a shiny thin silvery thread.
- The end of the silvery thread shows the reading of temperature. If mercury lining ends at 37, the reading is 37°C.
- Wash the bulb end of thermometer with an antiseptic solution.
- Give two or three jerks slightly. By doing this the mercury level would fall. When it falls to 35°C or below, put it below the tongue and wait for one minute.
- Take out the thermometer and read the temperature. Temperature would be near 37°C.
- The normal body temperature is 37°C. This can differ from person to person.
Posted by Riya ... 5 years, 6 months ago
- 3 answers
Yogita Ingle 5 years, 6 months ago
The precautions needed while reading a laboratory thermometer are:
1. It should be kept upright not tilted.
2. Bulb should be surrounded from all sides by the substance of which the temperature is to be measured.
3. The bulb should not touch the surface of the container.
Posted by Riya ... 5 years, 6 months ago
- 3 answers
Vinayak Agrawal 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
Similarities:
- Bulbs contain mercury.
- Glass tubes are long, narrow and uniform.
Differences:
- The clinical thermometer is used to measure body temperature, however, laboratory thermometer is not used for the purpose of measuring body temperature.
- The temperature range of clinical thermometers is 35°C to 42°C and that of laboratory thermometers is -10°C to 110°C.
- The least count of both the thermometers is different.
- The clinical thermometer is can be tilted while reading the temperature values whereas laboratory thermometer need to be kept upright.
Posted by Pokemon Super Gamer 5 years, 6 months ago
- 3 answers
Vinayak Agrawal 5 years, 6 months ago
Chhayank Bhargava 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
Wool is a natural animal fiber obtained from sheep, goat, yak, camel, etc. All these animals have an outer covering of hair, which is shaved off to obtain wool fibers. Animal fibers are naturally obtained from animals.
Posted by Suvitha Shini 5 years, 6 months ago
- 5 answers
Yogita Ingle 5 years, 6 months ago
The silkworms feed on the leaves of mulberry tree and grow bigger in size.
Posted by Sukanya Misra 5 years, 6 months ago
- 2 answers
Vinayak Agrawal 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
1) Milk Teeth Start erupting after 6 months of birth and appear between 6 to 24 months. While Permanent teeth Begin to replace milk teeth in the 6 th year of age and usually completed by 24 years.
2) Milk teeth Smaller, weaker and temporary While Stronger and permanent.
3) Milk teeth is of 3 types (incisor, canine and molars) 8 incisors + 4 canines + 8 molars. Whereas Permanent Teeth is 4 types (incisor, canine premolars and molars) 8 incisor+ 4 canine+ 8 premolars + 12 molars.
4) Milk Teeth have 20 in number, 10 each in the upper and lower jaw while Permanent Teeth have 32 in number, 16 each in the upper and lower jaw
Posted by Shagun Parihar 5 years, 6 months ago
- 2 answers
Vinayak Agrawal 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
if we donot clean our mouth properlyafter eating,many harmful bacteria grow in the teeth.
these bacteria break down the sugars present from the leftover foodand release acidswhich gradually damage the teeth. this is called tooth decay.
Posted by Gunja. Hindime Kumari 5 years, 6 months ago
- 1 answers
Posted by Danish Mohammad 5 years, 6 months ago
- 2 answers
Bhumi Shree 5 years, 6 months ago
Meghna Thapar 5 years, 6 months ago
Magnets can be naturally occurring or man-made. The man-made magnets are called artificial magnets. They are of various shapes – bar magnet, horse-shoe magnet, cylindrical or ball-ended magnet.
Properties of magnets:
- A freely suspended magnet always points in the north-south direction.
- Like magnetic poles repel each other while unlike magnetic poles attract each other.
Posted by A. Tiwari 5 years, 6 months ago
- 2 answers
Nivedya?? Manoj 5 years, 6 months ago
Posted by Trisha Bharti 5 years, 6 months ago
- 1 answers
Yogita Ingle 5 years, 6 months ago
For two or more bodies in an isolated system acting upon each other, their total momentum remains constant unless an external force is applied. Therefore, momentum can neither be created nor destroyed.
Posted by Jainisha Zala 5 years, 6 months ago
- 2 answers
Aditya Bettad 5 years, 6 months ago
Gaurav Seth 5 years, 6 months ago
Parasites are those organisms which obtain their nutrition from other living organisms, whereas saprophytes obtain their nutrition from the dead decaying organic matter.
Posted by Shagun Parihar 5 years, 6 months ago
- 5 answers
Divya Patkar 5 years, 5 months ago
Bhumi Shree 5 years, 6 months ago
Misbah ` 5 years, 6 months ago
Posted by Sumant Raj 5 years, 6 months ago
- 3 answers
Jainisha Zala 5 years, 6 months ago
Posted by Anshu Happy 5 years, 6 months ago
- 2 answers
Posted by Danish Mohammad 5 years, 6 months ago
- 1 answers
Yogita Ingle 5 years, 6 months ago
In physics, we can define energy as the capacity to do work.
For the potential energy the formula is
P.E. = mgh
The SI unit of energy is joules (J), which is named in honour of James Prescott Joule.
Posted by Bishal Chhetri 5 years, 6 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
Thermal radiation is the electromagnetic radiation emitted by a body with a temperature above absolute zero. The amount of energy emitted depends on the temperature of the surface and its ability to emit energy. An example of thermal radiation is the infrared radiation emitted by a common household radiator or electric heater. Sunshine, or solar radiation, is thermal radiation from the extremely hot gasses of the sun, and this radiation heats the earth.
Posted by Bishal Chhetri 5 years, 6 months ago
- 2 answers
Jainisha Zala 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
Thermal radiation is electromagnetic radiation emitted from all matter that is at a non-zero temperature in the wavelength range from 0.1μm to 100μm.
Posted by Labibay Lazim 5 years, 6 months ago
- 5 answers
Posted by Kusum Gupta 5 years, 6 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
Almost all liquids are either acids or bases to some degree. Whether a liquid is an acid or base depends on the type of ions in it. If it has a lot of hydrogen ions, then it is an acid. If it has a lot of hydroxide ions, then it is a base. Curd contains lactic acid and vinegar contains acetic acid. Lime water, soap, and milk of magnesia are basic substances and grapes contain tartaric acid.
Posted by Nabagata Paul 5 years, 6 months ago
- 4 answers
Bhumi Shree 5 years, 6 months ago
K T 5 years, 6 months ago
Meghna Thapar 5 years, 6 months ago
Tooth decay, also known as dental caries or cavities, is a breakdown of teeth due to acids made by bacteria. Symptoms may include pain and difficulty with eating. ... The acid is produced when sugars (mainly sucrose) in foods or drinks react with bacteria present in the dental biofilm (plaque) on the tooth surface. Tooth decay is the destruction of your tooth enamel, the hard, outer layer of your teeth. Plaque, a sticky film of bacteria, constantly forms on your teeth. When you eat or drink foods containing sugars, the bacteria in plaque produce acids that attack tooth enamel.
Meghna Thapar 5 years, 6 months ago
Tooth decay is the destruction of your tooth enamel, the hard, outer layer of your teeth. ... Plaque, a sticky film of bacteria, constantly forms on your teeth. When you eat or drink foods containing sugars, the bacteria in plaque produce acids that attack tooth enamel. Tooth decay, also known as dental caries or cavities, is a breakdown of teeth due to acids made by bacteria. Symptoms may include pain and difficulty with eating. ... The acid is produced when sugars (mainly sucrose) in foods or drinks react with bacteria present in the dental biofilm (plaque) on the tooth surface.
Posted by Rajesh Kumar Hu 5 years, 6 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
The thin, broad, flat and green part of a plant which is attached to the stem or branches is called a leaf. Leaves are of different shapes and sizes. It mainly consists of two main parts – lamina and petiole. Lamina is a broad, green part of the leaf and is commonly called leaf blade. Petiole is a thin stem with which leaf is attached to the stem and is commonly called as the leaf stalk. The centre of the lamina has a main vein called a mid-rib from which a large number of veins arise and spread to all the parts of a leaf.
Posted by Dhruv Singh 5 years, 6 months ago
- 2 answers
Yogita Ingle 5 years, 6 months ago
The chemical formula of common salt is NaCl. NaCl stands for Sodium Chloride.
Posted by Yashwant Ram 5 years, 6 months ago
- 2 answers
Neha Patel 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
Glands are important organs located throughout the body. They produce and release substances that perform certain functions. Though you have many glands throughout your body, they fall into two types: endocrine and exocrine.
Posted by Sanjana Dahal 5 years, 6 months ago
- 3 answers
Gaurika Balha 5 years, 6 months ago
Neha Patel 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
Migration is the movement of people across different states and regions. When people migrate within the boundaries of the country, it is called internal migration. International migration refers to the migration of people between countries. Migration is an important determinant of population change as it not only changes the size of population but also affects the population composition of urban and rural areas. If we take an example of India, we find that the urban population of the country has increased from 17.2% in 1951 to 27.7% in 2001 due to the migration of people from villages to the cities in search for better job opportunities.
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Navya Yadav 5 years, 6 months ago
1Thank You