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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 53851. |
why carbondioxide and water called raw material for photosynthesis? |
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Answer» Because they both are very important for photosynthesis Because they are essential for production of food for plants. Because they direct made material |
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| 53852. |
When we put vanilla essence in a test tube contain HCl . What we notice? |
| Answer» | |
| 53853. |
how minerals and water are transported in plants? |
| Answer» Water and minerals are transported by xylem which contains tracheids and vessels | |
| 53854. |
Properties of chemical reaction. |
| Answer» It show new form of substance and new substance is also form | |
| 53855. |
How many times a human being breath per minutes |
| Answer» 15-18 times | |
| 53856. |
What is magnetic field? How can the direction of magnetic field lines at a place be determined |
| Answer» The influence of force surrounding a magnet is called magnetic field. In the magnetic field, the force exerted by a magnet can be detected using a compass or any other magnet.You need to use a needle magnet or small compass. Place the compass at any point on the plane. Then follow the direction the compass is making. Mark the position of the compass and connect the markers. You will get a field line. Repeat the same thing with different starting points and you will obtain the field lines at a place. | |
| 53857. |
Explain human ear |
| Answer» Sound wave enter the ear canal and make the ear drum vibrate . this action move the tiny chain of bones ossicles , malleus ,incus stapes ) in the middle ear .the last bone in this chain knock s on the membrane window of the cochlea and make the fluid in the cochlea move. | |
| 53858. |
What happens to the air in our nasal cavity |
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| 53859. |
Plz state the equation for :Silver bromide on exposure to sunlight decomposes into silver & bromide |
| Answer» 2AgBr on exposure to sunlight gives 2Ag + Br(2) | |
| 53860. |
884048 |
| Answer» What to do | |
| 53861. |
The blood should not flow backward through the heart . Explain |
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| 53862. |
State the uses of plane mirrors. |
| Answer» Uses Of Plane Mirror Are -1. Plane mirrors are used as looking glass.2. Plane mirrors also have many scientific uses. In most of the measuring instruments, a plane mirror is placed under the scale and pointer. When the pointer moves, the image in the plane mirror also moves. Now the eye is so placed that the pointer covers its own image, and thus the pointer and its image coincides. Thus the eye, the pointer and its image in the mirror are in the same line perpendicular to the scale. This helps in getting the correct reading.3. Plane mirrors are also used in constructing periscope which is used in submarines.4. Plane mirrors are used in solar cookers.5. Plane mirrors are used to make kaleidoscope, a toy which produces beautiful patterns from colored paper, pieces of glass or small colored beads. | |
| 53863. |
What is natural indicator ? |
| Answer» Natural Indicator: Indicators obtained from natural sources are called natural indicators. Litmus, turmeric, red cabbage, China rose, etc. are some common natural indicators used widely to show the acidic or basic character of substances.Litmus: Litmus is obtained from lichens. The solution of litmus is purple in colour. Litmus paper comes in two colour – blue and red.Red cabbage: The juice of red cabbage is originally purple in colour. Juice of red cabbage turns reddish with acid and turns greenish with base.Olfactory Indicators: Substances which change their smell when mixed with acid or base are known as olfactory indicators. For example onion, vanilla, clove, etc.Onion: Paste or juice of onion loses its smell when added with base. It does not change its smell with acid.Vanilla: The smell of vanilla vanishes with base, but it’s smell does not vanishes with an acid. | |
| 53864. |
What is the electric power ? Define its all properties? |
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| 53865. |
Function of salavary amylase |
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Answer» Starch-----salivary amylase _-------- maltose Help in break down of starch in mouth |
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| 53866. |
What is 2 electric |
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| 53867. |
What means of vinger |
| Answer» Vinegar is a liquid consisting of about 5–20% acetic acid (CH3COOH), water, and other trace chemicals, which may include flavorings. The acetic acid is produced by the fermentation of ethanol by acetic acid bacteria. Vinegar is now mainly used as a cooking ingredient, or in pickling. | |
| 53868. |
What happens when a rayvof light is incident normally on a mirror |
| Answer» When a ray of light falls normally on the surface of a plane mirror , the following things happen:1. Incident ray is reflected back along the same path.2. Angle if incidence is zero and angle of reflection will be zero [according to laws of reflection] . | |
| 53869. |
Why mercury used in thermameter? |
| Answer» \xa01. It expands uniformly when heated.2. It has low specific heat capacity.3. I has a high boiling point (357 °C) and a low freezing point (-39 °C).4. It is a good conductor of heat.5. It does not stick to the walls of the glass tube.6. It is opaque and shiny and hence clearly visible.7. It is available in pure form. | |
| 53870. |
Any topic add in biology or not |
| Answer» No any topic is not added in biology | |
| 53871. |
What is delyde sunset |
| Answer» The sunrise is advanced due to atmospheric refraction of sunlight. An observer on the earth sees the sun two minutes before the sun reaches the horizon. A ray of sunlight entering the earth’s atmosphere follows a curved path due to atmospheric refraction before reaching the earth.This happens due to a gradual variation in the refractive index of the atmosphere. For the observer on the earth, the apparent position of the sun is slightly higher than the actual position. Hence, the sun is seen before the sun reaches the horizon.Increased atmospheric refraction of sunlight occurs also at the sunset. In this case, the observer on the earth continues to see the setting sun for two minutes after the sun has dipped below the horizon, thus delaying the sunset. | |
| 53872. |
Name the ways by which resistance can be connected in an electric circuit |
| Answer» Resistors are joined in two ways, i.e. in series and in parallel.Resistors in Series: When resistors are joined from end to end, it is called in series. In this case, the total resistance of the system is equal to the sum of the resistance of all the resistors in the system.Resistors in parallel: When resistors are joined in parallel, the reciprocal of total resistance of the system is equal to the sum of reciprocal of the resistance of resistors. | |
| 53873. |
Ca(OH) name the compound |
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Answer» Calcium hydroxide (quick lime) calcium hydroxide, quick lime Calcium hydroxide |
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| 53874. |
What do u mean by refraction |
| Answer» The change of direction of light because of change of medium is known as Refraction or Refraction of Light. The ray of light changes its direction or phenomenon of refraction takes place because of difference in speed in different media.The light travels at faster speed in rare medium and at slower speed in denser medium. The nature of media is taken as relative. For example air is a rarer medium than water or glass. | |
| 53875. |
What is light and what particles compose it. |
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| 53876. |
What is the role of respiratory pigment in respiration? |
| Answer» Animals have large body size due to which, the diffusion pressure alone cannot deliver oxygen to all parts of the body.Therefore, the respiratory pigments take up oxygen from the lungs and carry it to the tissues, which are deficient in oxygen before releasing it.Haemoglobin is one such respiratory pigment found in the Red Blood Cells (RBCs) of human beings. | |
| 53877. |
Syllabus change nahi hua hai na |
| Answer» Nhi... | |
| 53878. |
Kreb cycle |
| Answer» Krebs\' cycle involves a set of enzymatic reactions taking part in mitochondria in the presence of oxygen to yield energy rich molecules. It is also called as Tricarboxylic acid cycle. The net gain of aerobic respiration at the end of Krebs\' cycle is 2 ATP molecules, 8 molecules of NADH+H+ and 2 molecules of FADH2. As we know, ATP is the energy rich coin of the cell utilised for different purposes. | |
| 53879. |
Why there is a lot of pain in human body when we do physical exercise? |
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Answer» This is because lactic acid fills between our muscles and this situation usually happens when we do alot of exercise after alot of time.But our body becomes normal after some time when we do some relax or became habitual for this. Spinal cord |
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| 53880. |
Difference between light and dark reaction? |
| Answer» Light reaction depend upon light but dark reaction independence upon light | |
| 53881. |
Difination of Photosynthesis |
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Answer» Photosynthesis is a process in which green plants make their food on its own by using only raw materials which are CO2 and H2O in the presence of sunlight and chlorophyll. Photosynthesis is a process in which CO2 and H2O is combined in the presence of Sunlight and chlorophyll which gives glucose + oxygen + energy in green plants Photosynthesis is process in which green plants make thier food on its own by using only raw materials which are CO2 and H2O in the presence of sunlight. Hahz7w |
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| 53882. |
Difference between refraction and relection |
| Answer» REFLECTION: Reflection is the the process in which imcident light ray changes its path and turns back at the same angle as angle of incidence.REFRACTION: Refraction is the process in which light ray is breking down in its components. I am not confirm about Refraction. | |
| 53883. |
Compair convex and concave mirror |
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Answer» Concave mirror generally make real and inverted and convex mirror generally make virtual and erect. And concave mirror the reflecting surface is bent inward but in convex mirror the reflecting surface is bent outword |
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| 53884. |
Why earthing is called as a safety measures? |
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| 53885. |
List 2 characterstics of refraction of light |
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| 53886. |
What is sunil sensor |
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| 53887. |
Name oragnic acid present in fruits vegetables |
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| 53888. |
Why it is easier to roll a stone up on a slope while to lifting it |
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| 53889. |
If the gravity of earth becomes zero what will happen with the moon. |
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Answer» And also earth can be displaced from its orbit because the earth and the moon are co- balanced The moon will go out of earth\'s orbit and it can even collide to other planets like mars and jupiter . And if moon goes out of the earth\'s orbit the tides on earth will end |
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| 53890. |
Write steps of photosynthesis |
| Answer» Its have two steps : 1. Light reaction : Its occur in granum.Its also have two steps :1.Photolysis:Breaking down of water into electron and proton and oxygen gas. | |
| 53891. |
Explain process of dialysis |
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Answer» Dailysis is a procsee in which blood is purified and transfer new and healthy or fresh blood to the kidney and prevent the kidney from kidney failure diseases Dialysis is a process in which blood is purified |
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| 53892. |
Write the chemical equation involved in respiratory system in human |
| Answer» C6H12O6+6O2=6CO2+6H2O+energy | |
| 53893. |
Whats The formula of Chlorophyll |
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Answer» C55H72O5N4Mg this is the formula .Reaction is different thing. Ccl4 |
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| 53894. |
Feso4 it should be written as ???? |
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Answer» Iron sulphate Ferrous Sulphate Ferrous sulphate |
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| 53895. |
Can anyone tell me difference between endothermic reaction and exothermic reaction |
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Answer» And in which heat is evolved is called exothermic reaction The reaction in which heat is absorbed is called endothermic reaction The reaction in which heat is evolved is exothermic reaction The reaction in which heat is absorbed is endothermic reaction Endothermuc means gas involve |
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| 53896. |
What is corrosion?Explain its adadvantage and disadvantage. |
| Answer» The rusting in the metals due to moisture present in air is called corrosion | |
| 53897. |
Explain why freshly cut Apple is almost white but it turns reddish brown after some time? |
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Answer» Because it contains iron Because of the reaction ( with oxygen ) Apple contains getting or iron content Because apple contains getting or iron content |
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| 53898. |
Chemosinthesis |
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| 53899. |
What is emulsification of fat? |
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Answer» Emulsification of fat means break down of fats into fatty acids. Emulsification of fats is the breaking up of complex fat molecules into simpler fat molecules by bile juice secreted by liver which will be then easier to digest with the help of lipase and the end products coming from it are fatty acids and glycerol. |
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| 53900. |
How are oxygen and carbondioxide exchanged in our body during respiration. |
| Answer» On google | |