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InterviewSolution
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.
| 3051. |
What causes of diepersion? |
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Answer» Visible light is made of a mixture of frequencies of light. What we see as white light includes all the colors of the rainbow, from the high frequency violet to the low frequency red. When white light is passed through a triangular glass prism, it is separated into a spectrum of colors: red, orange, yellow, green, blue, indigo and violet. This process of separating white light into colors is known as dispersion.Two causes of dispersion of light are:-Optical Density :Optical density is a term that describes how light behaves when it passes through transparent material. If something has a high optical density, then it has a greater ability to slow light down as it passes through. As light strikes something transparent, it is absorbed by the material\'s atoms, then released. This causes the light to pass from atom to atom through the material. However, the process of absorption and emission can be slightly faster or slower, depending on the light\'s wavelength. Light with shorter wavelengths is slowed down more than light with longer wavelengths.Refraction :When light passes at an angle from one material to another, it will bend, or refract. This happens because the two materials have different optical densities. For example, when light passes from air to glass, the glass has a greater optical density than air. This causes the light to bend closer to the normal, which is an imaginary line perpendicular to the surface. When the light reaches the other side of the glass and exits into the air, moving from a greater optical density to a lesser one, the light bends away from the normal. According to neton ,light is a heterogeneous mixture of different colours,which are deviated by different extents,when they are passed through a prism. ( Prism doesn\'t. Produce the. Different colours of the spectrum from White light but it merely separate white light in to it\'s Constituents colours. |
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| 3052. |
What is conductivity? |
| Answer» At which rate elctricity flow | |
| 3053. |
Name two salt in black and white photography |
| Answer» Silver chloride or silver bromide | |
| 3054. |
What is the function of pupil |
| Answer» The pupil is the opening in the center of the iris (the structure that gives our eyes their color). The function of the pupil is to allow light to enter the eye so it can be focused on the retina to begin the process of sight. The pupils appear perfectly round, equal in size and black in color. The black color is because light that passes through the pupil is absorbed by the retina and is not reflected back. | |
| 3055. |
In chapet light virtual images are not real then how we can see it |
| Answer» | |
| 3056. |
Solar energy and nuclear energy are the two faces of the coin. Justify |
| Answer» | |
| 3057. |
Explain Mendeleef theory ? |
| Answer» Dmitri Ivanovich Mendeleev, father of the periodic table. The patterns Mendeleev documented are called a symmetry and whenever there is symmetry in nature, it means that there\'s a simpler way of describing things. ... Mendeleev\'s idea of the periodic table is a perfect example of a good scientific theory. | |
| 3058. |
Why are testes in human male located outside the body |
| Answer» The testicles located outside of the body because the temperature of dangling testes needs be lower than the body temperature to optimize sperm production. During the gestation the testes descend from the chest across the whole body cavity to get outside of the body and this passage weakens the wall structure resulting in a higher propensity to hernias. Indeed, the sperm sensitivity is extreme, clearly affecting our reproductive chances,if the testes heat up by as little as 2°C, sperm formation is adversely affected. Sperm count will drop, the number of normal sperm will fall and the number of abnormal sperm will increase. Semen quality is naturally lower in summer compared with winter. | |
| 3059. |
Why did Mendel choose pea plant for his experiment? |
| Answer» Because-*The pea plant are small in size , so that these can be grown in a small area .*The plant complete it\'s life cycle within 3-4 months .*The flowers of pea plant are closed , so there are less chances of cross pollination .*The pea plant contain the contrasting characters . | |
| 3060. |
How does fertilization does not occur in a human? |
| Answer» | |
| 3061. |
Differentiate between budding and spore formation |
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Answer» But in spore formation the seeds are already present in the parent body Budding......The new body parts(eg.HYDRA)grows and seprates from its parent body...It is a type of asexual reproduction... |
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| 3062. |
Define atmospheric refraction? |
| Answer» When the light rays pass through the atmosphere having layers of different dencities and refractive indices, then refraction of light takes place. This refraction of light by the earth\'s atmosphere is atmospheric refraction. | |
| 3063. |
Justify- Solar energy and nuclear energy are the two faces of the same coin. |
| Answer» | |
| 3064. |
What is menstruation cycl |
| Answer» | |
| 3065. |
What is anerobes |
| Answer» | |
| 3066. |
Speed of drops of rain |
| Answer» 32 Feet/ Sec | |
| 3067. |
Justify the statement solar energy and nuclear energy are the two faces of the same coin. |
| Answer» | |
| 3068. |
which is best site for Study? ?? |
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Answer» Brain My cbse guid and study rankere Meritnation |
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| 3069. |
Why alkenes are given this name |
| Answer» | |
| 3070. |
What is iron salt and chemical formula of it |
| Answer» Feso4 | |
| 3071. |
Sign convention spherical mirror |
| Answer» 1) the object distance \'u\' is always negative2) the focal length of convex is negative& of concave is positive | |
| 3072. |
What is oxidizing agent |
| Answer» Give two example | |
| 3073. |
Our nails are made up of? ??? |
| Answer» I think carbon | |
| 3074. |
What is placenta?give two funtion |
| Answer» It is disc like structure.The connection between mother and featuse during pregnancy period. | |
| 3075. |
What do you mean photogromatic lens |
| Answer» | |
| 3076. |
Important question jo board exam m aate h |
| Answer» | |
| 3077. |
What is adolosence |
| Answer» | |
| 3078. |
What I\'d Pollination |
| Answer» | |
| 3079. |
What is rarefaction?explain . |
| Answer» Bending of light when it passess from one medium another | |
| 3080. |
Uses of air |
| Answer» | |
| 3081. |
Why alcohol nd glucose not conduct electricity but h2so4 nd HCl does??? |
| Answer» Alcohol and glucose do not conduct electricity because Alcohol and glucose have hydrogen but not have hydrogen ions in the free states. H2So4 and HCl conduct electricity because have hydrogen ions in free states | |
| 3082. |
what are enzymes? are biocatalyst which reserve the function? |
| Answer» | |
| 3083. |
What is catenation . Hi |
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Answer» Self combination property of carbon the self linking property of element mainly carbon atoms is called catenation. Self linking property of carbon |
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| 3084. |
What is pacipitate |
| Answer» | |
| 3085. |
How does auxin promote phototropism? |
| Answer» Auxin is a plant hormone, so it is a chemical substance involved in regulating the action of certain cells within an organism.\xa0Phototropism is the process by which plant grow in response to light. Tropisms are responses to directional external stimuli and here\xa0Photo-\xa0indicates it is a response to light. Auxin increases the flexibility of plant cell walls which are the main factor limiting plant cell growth. As a consequence, plant cells tend to grow faster in the presence of auxin. When a plant senses a directional light stimulus it\xa0redistributes\xa0its auxin molecules to the side that is further\xa0away\xa0from the light. As a consequence, the plant cells that are further away from the light experience a greater auxin concentration and grow faster, causing the shoot to bend\xa0towards\xa0the light. This mechanism allows plants to optimize the amount of light they receive in order to increase photosynthesis rates.\xa0 | |
| 3086. |
What is mentrual cycle |
| Answer» | |
| 3087. |
What is isomers if butane |
| Answer» | |
| 3088. |
Method any two points to differentiate between oxidation and combustion. Give one example of each |
| Answer» | |
| 3089. |
Who discovered law of conservation of mass |
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Answer» Lavoiser antoine lavoiser |
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| 3090. |
Who was the father of genetics and who was the father of experimental genetics |
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Answer» Mendel Mendel |
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| 3091. |
State the valency of each carbon atom inAn alkane andAn alkyne |
| Answer» 4 in alkane and 4 in alkyne | |
| 3092. |
Why colour of sky is blue |
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Answer» Blue colour have less wavelength and more scattered Because blue colour has less wavelength and more scattered |
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| 3093. |
What happens to the resistance of a wire if it is made thinner |
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Answer» Resistance of wire will increase Resistance will increase. As R is inversely proportional to area of cross section of wire The ristences is increase |
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| 3094. |
What is ohm\'s law? |
| Answer» A current through a metallic element is proportional to the potential difference applied between its ends provided the temperature remains constant. | |
| 3095. |
How can we identify CO2 gas? |
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Answer» It turns lime water milky and not burn with a pop sound. It burns with a pop sound |
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| 3096. |
When egg is not fertilize what happened |
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Answer» it comes out.....which is called mensturation.. Chicken does not come out |
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| 3097. |
What is hybridization? Discuss the types and role of hybridization in crop improvement. |
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| 3098. |
What is electronegativity or metallic property?? |
| Answer» The ease with which the atom can lose electron is called electronegativity. | |
| 3099. |
What is the diff.b/w Fleming\'s left and right hand rule |
| Answer» In Fleming left hand rule the middle finger show the direction of current and in Fleming right hand rule the middle finger show the direction of induced current .rest all are same. This is the major distance | |
| 3100. |
What is caustic soda |
| Answer» Sodium hydroxide is caustic soda , it is a salt | |