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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.
| 63851. |
How many type of hormonrs |
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Answer» There are three major types of hormones. 1) Protein hormones (or polypeptide hormones) are made of chains of amino acids. An example is ADH (antidiuretic hormone) which decreases blood pressure. 2) Steroid hormones are derived from lipids. Reproductive hormones like testosterone and estrogen are steroid hormones. 3) Amine hormones are derived from amino acids. Epinephrine, which helps regulate the fight-or-flight response, is an amine hormone. ? Nhi pata |
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| 63852. |
What do u mean by cell |
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Answer» Cell is the functional and structural unit of life . Robert Hook discovred the cell in 1665. It is of two type one of electricity and one of biology. A cell maintains potential difference in the circuit The cell is the basic structural, functional, and biological unit of all known living organisms. A cell is the smallest unit of life. Cells are often called the "building blocks of life". The study of cells is called cell biology. |
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| 63853. |
Write the harmful effects of UV rays |
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Answer» It also can cause skin cancer Ultravoilet rays can cause skin cancer, damage to eyes , causing an eye desease called contaract and also damages immune system by lowering the body\'s resistance to disease. It causes many types of deseases like cancer asthama and etc |
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| 63854. |
define redox reaction |
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Answer» The reaction in which oxidation and reduction takes place is known as oxidation -reduction or redox reaction. Those reaction in which oxidation & reduction takes place simultaneously |
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| 63855. |
What is haber\'s process? |
| Answer» Haber\'s process is an artificial process for producing ammonia by the reaction of nitrogen with hydrogen . | |
| 63856. |
What is the importance of double circulation system ? |
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Answer» Double circulation system is important to prevent oxygenated and deoxygenated blood from mixing. This is useful in animals that have high energy needs. Double circulation system is important as it prevents the oxygenated blood and deoxygenated blood from mixing together. |
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| 63857. |
How ore of sulphure can be seperated ? |
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Answer» Ores of sulphur can be seperated by the process of roasting which is performed in the presence of oxygen in the form of metal oxides By the process of roasting which is in the presense of oxygen By roasting |
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| 63858. |
What\'s the function of kidney |
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Answer» Kidney helps in the purification of toxic materials. Kidneys has small filteration unit named nephrons which is responsible for the purification of toxic substances in our body To purify toxic blood To purify waste material of body |
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| 63859. |
What is delta mc^2 and what is energy released in this process called |
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| 63860. |
What is cerebral peduncle |
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| 63861. |
What is EMI ? |
| Answer» EMI(Electric magnetic Induction) | |
| 63862. |
What is the role of iron in formation of ammonia |
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| 63863. |
Name the hormones secreted by pineal gland. |
| Answer» Melatonin- regulates sleep- wake cycle | |
| 63864. |
Give uses of solenoid |
| Answer» 1.Used in electromagnets 2.open or close valves ?? | |
| 63865. |
What do you mean by Allotropy |
| Answer» The various physical forms in which an element can exist are called allotropes of an element..take an example .the allotrope of carbon is diamond . Graphite and buckministerfullerene | |
| 63866. |
What is the PH value of coffee? |
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Answer» 4.5 - 5.5 Firstly take one drop of coffee then put it on the ph paper check the colour and then compare that colour.. |
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| 63867. |
Motor neurons |
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Answer» Just opposite of sensory nerve Carry information from brain or spinal cord to effector organ Motor neurons carry responses from spinal cord to organ |
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| 63868. |
NaHCO3 is a basic solution justify |
| Answer» It is a salt produced by the neutralization reaction between a strong base (NaOH) and a weak acid (H2CO3), hence it is a basic salt.\xa0It is heated strongly to produce sodium carbonate.\xa02 NaHCO3 → Na2CO3 + H2O + CO2Sodium carbonate is recrystallized to produce washing soda.\xa0Na2CO3 + 10H2O →\xa0Na2CO3.10H2O | |
| 63869. |
What is hyphae, sporangium and spores? |
| Answer» Hyphae are thread like filamentous structures forming the body of fungus. Hyphae altogether combine to form a network called as mycelium. Hyphae possess thick cell walls. Hyphae possess a characteristic feature of branching repeatedly.Sporangia is a structure, where spores are formed. It is found in many fungi and plants.Spores are unicellular bodies in the parent that are capable of growing into a new individual . | |
| 63870. |
Ohm\'s lal? |
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Answer» a law stating that electric current is proportional to voltage and inversely proportional to resistance. Ohm\'s law: V is propotional to I |
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| 63871. |
Which source of energy is used to cancer treatment |
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Answer» Biogas Biogad Uranium 256 |
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| 63872. |
What happens when ammeter is connected in parallel? |
| Answer» An ammeter is connected in series with the circuit because the purpose of the ammeter is to measure the current through the circuit. Since the ammeter is a low impedance device, connecting it in parallel with the circuit would cause a short circuit, damaging the ammeter and/or the circuit. | |
| 63873. |
Why voltmeter connected in parallel to circuit |
| Answer» Bcoz potential dufference is measured between two points | |
| 63874. |
Explain the reflex actions |
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Answer» A sudden,quick and immediate respons of the body to a stimulieg . knee jerk The immediate responce to stimulus.it means when we touch a unknown object i.e like hot pan we move our hand suddenly in this situation the message goes to spainal chord and first responds it .the only function of brain in reflex action is to identify how this happens Reflex actions are sudden, involuntary reactions of the body in response to stimuli. They occur without the involvement of the conscious areas of the brain. Therefore, all reflex actions are unconscious actions. Somatic nervous system is responsible for reflex arcs.\xa0Reflex arc\xa0is the path of impulses in the reflex action.Reflex actions occur both from the brain and spinal cord which are the parts of the central nervous system. Most often these actions are mainly formed from the spinal cord. When sudden responses are required, instructions are given by the spinal cord itself. Impulses reach the brain only after that. Later conscious responses are made.\xa0 |
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| 63875. |
Is electric inverter is a source of direct current ?? |
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| 63876. |
Can light split into 7 colour from mirror ,if no then why?? |
| Answer» Chemical reactoin and equatiin | |
| 63877. |
Explain What is electrolises process ? Explain with an example . |
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Answer» Decomposition reaction in the presence of electricity The process in which ionic bond can be broken down into the pure element Electrolysis is the process by which ionic substances are decomposed into simpler substances when an electric current is passed through them. Electrolysis is widely used for Electroplating. Break down into H^*and OH^- NaCl =NAOH +CL2 +H2 |
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| 63878. |
Statement for right hand thumb rule not by flemings? |
| Answer» Suppose you are graping a wie in your right hand with your thumb up the direction in which you thumb is pointing is the direction of current and the direction in which your fingures are incircle the will give the direction of magnetic field lines around the wire | |
| 63879. |
What is biomass and what can be done to obtain bioenergy by using boimass |
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Answer» Hii The fuel developed from natural and organic materials or wastes, which are a renewable and sustainable source of energy is known as Biomass.For generating biomass, often the energy sources are thought to be limited to plant wastes but that’s not the case. Even animal-derived materials are used for biomass generation. Biomass is the prime building block of biofuels, highly used for electricity production to produce heat in the context of energy, as an alternative to fossil fuels. |
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| 63880. |
Which topic is important in chapter acid bases and salt |
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Answer» 1=oilfactory inficatars ,pH scale , comman solt , bleaching powder ,baking soda, washing soda, plaster of paris, crystallisation The spelling of physical is wrong ? Pyhiscal and chemical properties Everything is important All topics are important. ? |
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| 63881. |
Explain the process of double circulation |
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Answer» Thanks Double circulation is a distinguishing characteristic of the human circulatory system. It is very significant as it allows for proper circulation of blood, without the mixing of the oxygenated and deoxygenated blood. The same blood is circulated by heart twicely in a friction of second is called double circulation . it is of two types pulmonary and sysmetic circulation |
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| 63882. |
Why the colour of sun appear red |
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Answer» Because the light contains combination of 7 colours and among which red colour have frequency. It appears red only take sunset or sunrise Because it consists of seven colours in which red has highest frequency and at sunset and rise the distance is large so only red ? travels than other ? s |
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| 63883. |
Why are metals are melliable and ductile |
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Answer» Throughout h through how type ho gay The energy transferred through how the rest of Metal by moving electrons metals are described as malleable (can be beaten it convert into thin sheet). Ductile ( can be convert into thin wires) this is because of ability of atom to roll over each other into new position without breaking metallic bond |
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| 63884. |
Acid react metal |
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Answer» Metal + Acid = Salt + H2Eg:- Ca+ H2SO4 = CaSO4 + H2 Because acid is have a hard power it react metal then metal comes in liquide form |
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| 63885. |
Write the example of parasitic plant one saprophytic organism |
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Answer» Roundworm, mushroom For parasitic nutrition cuscuta is an example.For saprophytic nutrition Rhizopus(bread mould), yeast etc. Cuscuta (amar bell) and fungi |
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| 63886. |
What is electricity? Why we use of this? |
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Answer» It is a convenient and controlable form of energy produced by electric current. Flow of electrons in an electric circuit Flow of electric charges Such a silly question |
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| 63887. |
The coular of jink matel is |
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Answer» Its not completely blue...it has a bluish grey lustre...so the colour is specifically \'bluish-grey\'. Blue |
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| 63888. |
why non-metals do not react with water? |
| Answer» Non-metals are electronegative are unable to break the bond between H and O in water. The non-metals cannot reduce hydrogen by donating electrons.Thus non metals do not react with water. | |
| 63889. |
Give three example of bidigerable substances. And Brass ud made of |
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Answer» Thanx Biodegradable substances can be broken down into simpler,harmless substances in nature with due course of time by the biological process such as action of microbes. They can be recycled as a part of food chain.Paper, wood, cloth, sewage,oil pollutants, cattle dung, domestic waste are some of the examples.Brass is a metallic alloy that is made of copper and zinc. |
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| 63890. |
Explain the principal of working motor with the help of diagram? |
| Answer» Electric motor: A motor is a device which converts electrical energy into mechanical energy.Principle of motor : A motor works on the principle that when a rectangular coil is placed in a magnetic field and current is passed through it. A force acts on the coil which rotates it continuously.\tWhen electric current is passed into the rectangular coil, this current produces a magnetic field around the coil.\tThe magnetic field of horse shoe-type magnet then interacts with the magnetic field of the coil and causes the coil to rotate continuously.\tIf ABCD is in horizontal position current from battery enters the coil through brush B1 , and commutator half ring C:. The current flows in the direction ABCD\tand leaves via ring and brush B2\tThe direction of current is from A to B, the direction of current is from C to D. The force on side AB of the coil is in the downward direction. Whereas the force on the side CD of the coil is in the upward direction. ABCD rotate in anti-clockwise direction.\tWhile rotating when the coil reaches vertical position then the brushes B1 and\xa0B2 will touch the gap between the commutator rings and current to the coil is cut off. But the coil does not stop rotating because it has already gained momentum.\tThe coil CD comes on the left side and AB comes to the right side. Again they come in contact with brush B1 Current direction is reversed.\tThe reversing of current in the coil is repeated after every half rotation due to which the coil continue to rotate as long as current from the batter is passed through it. The rotating shaft of electric motor can drive a large number of machines which are connected to it.\t | |
| 63891. |
Give differences between parasitic and holozoic nutrients in 5 points |
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Answer» I m not able to get it in ncert please if you know you give an answer to this or refer guide from where i could easily get it Anchal book me doond mill jayega |
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| 63892. |
Explain why electric power transmitted at high voltages and low currents to distant places |
| Answer» Wire resistance causes losses in eletric power transmission. If you keep resistance constant, losses are linearly proportional to voltage, but proportional to the square of the current. So if you double the voltage, for the same power you have half the current, and power dissipation is effectively halved for the same power. | |
| 63893. |
Who are parasitic plants |
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Answer» Those plants which is totally dependent on other plants for food,or those plants which obtain food from the body of another plant is known as parasitic plants.Eg. Refflesia is a plant which obtain its food for other plants Those plant that derives all of its nutritional requirement from another living plant . For eg. Cuscuta and refflesia |
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| 63894. |
Two disadvantages of vegetative propogation |
| Answer» \tThe plants gradually lose their vigour as there is no genetic variation. They are more prone to diseases that are specific to the species. This can result in the destruction of an entire crop.\tSince many plants are produced, it results in overcrowding and lack of nutrients. | |
| 63895. |
Describe the breakdown of proteins by different enzymes in 5 points |
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| 63896. |
Describe roles of jejhenum, ileum ahd deudenum |
| Answer» There are three parts of the small intestine:Duodenum: It is the first part of the small intestine where breakdown of food occurs with the help of enzymes.Jejunum: Jejunum is the next portion of the small intestine and it has a lining which is specialized in the absorption of carbohydrates and proteins.Ileum: Ileum is the last portion of the small intestine and it is responsible for absorption of fats, and bile salts which are a component of bile. | |
| 63897. |
What is veinlet |
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| 63898. |
What is lamina or leaf blade |
| Answer» The leaf blade:\xa0It is also called the lamina. It’s generally broad and flat. It is in this layer that photosynthesis occurs. It contains a prominent midrib at the centre of the leaf blade which is the main vein. From this midrib arise branches called veins. They are of different types depending upon the type of edges, the pattern of the veins and number of blades per leaf. | |
| 63899. |
What is midrib |
| Answer» Pinnately veined leaves have one large central vein, called the midrib, which extends from the base of the blade to its tip. Other large veins branch off on each side of the midrib. | |
| 63900. |
Give half yearly sylibas of science |
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