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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.
| 6051. |
Dietary fibre-found mainly in fruits, vegetables, whole grains and legumes- is probably best known for its ability to prevent or relieve constipation. But foods containing fibre can provide other health benefits as well, such as helping to maintain a healthy weight and lowering your risk of diabetes, heart disease and some types of cancer. Dietary fibre, also known as roughage or bulk, includes the parts of plant foods your body can't digest or absorb. Unlike other food components, such as fats, proteins or carbohydrates- which your body breaks down and absorbs- fibre isn't digested by your body. Instread, it passes relatively intact through your stomach, small intestine and colon and out of your body. Enlist the advantages of fibres in diet. |
| Answer» Solution :Fibres help to relieve constipation and help in maintaining a HEALTHY WEIGHT and LOWERING risk of diabetes, HEART disease and some types of cancer. | |
| 6052. |
Dietary fibre-found mainly in fruits, vegetables, whole grains and legumes- is probably best known for its ability to prevent or relieve constipation. But foods containing fibre can provide other health benefits as well, such as helping to maintain a healthy weight and lowering your risk of diabetes, heart disease and some types of cancer. Dietary fibre, also known as roughage or bulk, includes the parts of plant foods your body can't digest or absorb. Unlike other food components, such as fats, proteins or carbohydrates- which your body breaks down and absorbs- fibre isn't digested by your body. Instread, it passes relatively intact through your stomach, small intestine and colon and out of your body. Which is the path through which fibres pass in the digestive tract? |
| Answer» Solution :Fibres pass through STOMACH SMALL intestine and COLON. | |
| 6053. |
Dietary fibre-found mainly in fruits, vegetables, whole grains and legumes- is probably best known for its ability to prevent or relieve constipation. But foods containing fibre can provide other health benefits as well, such as helping to maintain a healthy weight and lowering your risk of diabetes, heart disease and some types of cancer. Dietary fibre, also known as roughage or bulk, includes the parts of plant foods your body can't digest or absorb. Unlike other food components, such as fats, proteins or carbohydrates- which your body breaks down and absorbs- fibre isn't digested by your body. Instread, it passes relatively intact through your stomach, small intestine and colon and out of your body. Are fibres digested in the body? |
| Answer» SOLUTION :No, FIBRES are not digested in the BODY but are passed on without any ALTERATION. | |
| 6054. |
Dietary fibre-found mainly in fruits, vegetables, whole grains and legumes- is probably best known for its ability to prevent or relieve constipation. But foods containing fibre can provide other health benefits as well, such as helping to maintain a healthy weight and lowering your risk of diabetes, heart disease and some types of cancer. Dietary fibre, also known as roughage or bulk, includes the parts of plant foods your body can't digest or absorb. Unlike other food components, such as fats, proteins or carbohydrates- which your body breaks down and absorbs- fibre isn't digested by your body. Instread, it passes relatively intact through your stomach, small intestine and colon and out of your body. What is a roughage? |
| Answer» Solution :Roughage is the fibre content of the FOOD which consists of plant matter which cannot be DIGESTED by the human enzymes, hence FORM UNDIGESTED bulk matter in the faeces. | |
| 6055. |
a. The refractive index is glass is 1.5. What is the speed of light in glasss? (Speed of light invacuum is 3.0xx10^(8)ms^(-1)) b. Is the speed of light inglass independent of he colour of light? If not, which of the two colours red and violet travels slower in a glass prism? |
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Answer» Solution :REFRACTIVE index mu=`"SPEED of light in VACCUM"/"speed of light in medium"` `mu=(c)/(NU)=(3xx10^(8))/(nu)` `:.nu=(3xx10^(8))/(1.5)=2XX10^(8)ms^(-1)` |
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| 6056. |
H_(2)gas can behave like ideal gas at ........... pressure and ............... temperature. |
| Answer» SOLUTION :LOW HIGH | |
| 6057. |
Of what substance is the core of the coil of an electric motor made ? |
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Answer» |
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| 6058. |
The work done in moving a charge of 2C across two poits in a circuit is 2J. What is the potential difference between the points ? |
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Answer» 1V |
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| 6059. |
What energy transformations occur in a hydro power plant? |
| Answer» Solution :In a hydro power PLANT POTENTIAL energy possessed by STORED water is converted into ELECTRICAL energy. | |
| 6060. |
Ram adds acetic acid solution to solid sodium hydrogencarbonate. What would he observe? |
| Answer» Solution :He would observe a GAS with brisk effervescence because when ACETIC ACID solution is added to solid sodium hydrogencarbonate, sodium ethanoate is formed along with the evolution of CARBON dioxide. | |
| 6061. |
As per the cartesian sign convention followed for mirrors and lenses |
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Answer» focal LENGTH of concave mirror and concave lens is negative |
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| 6062. |
State Right Hand Thumb Rule and also draw diagram. |
Answer» Solution :Hold the wire carrying current in your right HAND, such that the THUMB indicates the DIRECTION of current, then the folded FINGERS will indicate the presence of MAGNETIC field (Jines) surrounding the wire. 
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| 6063. |
By diverting the energy and mind towards positive thinking, negative thoughts are automatically neutralized. |
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| 6064. |
You are given a convex lens of focal length 30 cm. At what distance from the lens should you hold a candle flame to observe a virtue image of the flame? |
| Answer» Solution :When the object of placed within the FOCUS of a CONVEX lens, the image formed is virtue, erect and MAGNIFIED. Hence the candle flame must lie between 0 to 30 CM from the lens to observe the virtual image. | |
| 6065. |
(a) How does the rate of reaction depend upon the concentration of reactants ? |
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Answer» Solution :(1) A chemical reaction takes PLACE due to collisions of the reactant molecules. Higher the concentrations of the reactants more will be the frequency of collisions and faster will be the rate of the reaction. (2) In the reaction of dil. HCI and ` CaCO_(3) , CaCO_(3)`DISAPPEARS slowly and ` CO_(2)`also liberates slowly. On the other hand th reaction with concnetrated HCI takes place rapidly and `CaCO_(3)`disappears fast. (3)Concentrated acid REACTS faster than dilute acid, that means the rate of a reaction is proportional to the concentration of reactants. Slow reaction. ` CaCO_(3).+ "dil". 2HCI to CaCI_(2) + CO_(2) + H_(2)O` Fast reaction : ` CaCO_(3) + underset("conc.")(2HCI) to CaCI_(2) + CO_(2) +H_(2)O` |
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| 6066. |
In a commonly observed rainbow the innermost are is of ___________ colour and the outermost arc is of ___________ colour. |
| Answer» SOLUTION :VIOLET, RED | |
| 6067. |
Fig.1.33 shows a uniform metre rule placed on a fulcrum at its mid point O and having a weight 40gf at the 10cm mark and a weight of 20gf at the 90cm mark. (i) Is the metre rule in equilibrium? If not , howwill the turn? (ii) How can the rule be brought in equilibrium by using an additional weight of 40 gf? |
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Answer» Solution :(i) No, The rule will TURN anticlockwise (ii) By PLACING the additional WEIGHT of 40gf at the 70CM mark. |
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| 6068. |
What is the maximum resistance which can be made using five resistors each of 1//5Omega? |
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Answer» `1//5OMEGA` |
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| 6069. |
What kind of mirror-concave, convex or plane- would be best suited for use in a solar cooker ? Why ? |
| Answer» SOLUTION :CONCAVE mirror because it will CONCENTRATE sunrays from a large area into a small area and thus will produce large AMOUNT of HEAT in that area. | |
| 6070. |
Why are the video-clips of parents threatening or hitting the children not studying as per their wish or domestic helpers beating the children are very common on social media nowdays ? |
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Answer» Solution :Due to nuclear families children stay only with their parets. Grandparents or other relatives are not at home. In most of the families the working mother also leaves the house for EARNING or for her career.When children come home after school hours, nobody knows what are they doing! Throughtout the academic year they either spend time over trivial things or do not complete their homework.As a result there is sudden mental stress due to approaching examinations. In addition to this due to population explosion there is fierce competition in verysector. Parents are not aware of the capabilities and aptitude of their children.They just thinkof fulfilling their own expectations from children, Therefore they start threatening or hitting threri children for not proving themselves. this is absolutely wrong type of parenting Due to nuclear families and educated mothers, they LEAVE their very young children withservents or baby-sisters .Due to tremendous social change,the women also strive for equality but at the same time they do not want help from her seniors. They younger generation do not want to take care of the OLDER generation and thus they do not want the obligation from them either. The self-centredness has crept into personality of everyone.Thus they prefer to give payment to the servents or helpers than talking help of their own old parents or in laws.Such paid people do not take care of the children as there is no bond of love between them. Then they beat and commit atrocities on these young babies. Such CLIPS are circulated on the social media. All the above three questions, show a condition of changing social structure.The persons who indulge in BEATING or harassing are mentally sick people who themselves are under mental stress. |
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| 6071. |
How is the induced current in a secondary coil related to current in a primary coil ? |
| Answer» Solution :Induced current in secondary coil is DIRECTLY proportional to the rate of CHANGE of current in the PRIMARY coil. | |
| 6072. |
Tobacco containing substances have…………. Effect on mouth and lungs. |
| Answer» SOLUTION :CARCINOGENIC | |
| 6073. |
Can you predict the reson for the bulb not glowing in situations 2 and 3 ? |
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Answer» Solution :Yes, in situation 2 - there is no charge to travel in the CIRCUIT as the battery is DISCONNECTED. So, the BULB isn't glowing. In situation 3, we REPLACED the copper wires with nylon wires. Nylon is not a conductor. So, the bulb isn't glowing. |
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| 6074. |
What is meant by the apparent size of an object ? With a neat and labelled diagram, explain the relation between the apparent sizeof an object and the angle subtended by the object at the eye. |
Answer» Solution :An object appears SMALL or big depending UPON the size of its image formed on the RETINA of the eye. The size of an object as perceived by the eye is called the APPARENT size of an object . Consider two object of the same size, one held enar the eye and the other away from the eye as shown in the following figure . THe nerarby object (PQ) appears larger than the distant object `(P_(1)Q_(1))` distant object at the eye. This shows that the apparent size of an object depends upon the able subtended by the object at the eye. The greater the angle subtended by the object at the eye, the greater is the apparent size of the object. Similarly, the SMALLER the angle subtended by the object at the eye, the smaller is the apparent size of the object. |
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| 6075. |
A particle of mass 0.3 kg is subjected to a force of F= -kx with k= 15 Nm^(-1). What will be its initial acceleration if it is released from a point 20 cm away from the origin ? |
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Answer» `a=(-kx)/(m)` for x=20cm. `RARR a=-5m//s^(2)` |
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| 6076. |
(a) List four factors on which the magnitude of magnetic force acting on a moving charge in a magnetic field depend. (b)How will a fine beam of electrons streaming in west to east direction be affected by a magnetic field directed vertically upwards ? Explain with the help of a diagram mentioning the rule applied. |
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Answer» Solution :(a) MAGNITUDE of magnetic force acting on a moving charge in a magnetic field depends on (i) the magnitude of charge, (ii) speed of moving charge, (ii) strength of magnetic field, and (IV) the angle between the direction of motion of charge and the direction of magnetic field. (b)The electron streamingfrom west to eastis equivlaenttoa currentfrom east to west . Themagnetic fieldB is vertically upwards and shown by cross mark(x). HENCE, in accordancewith Fleming .s LEFT hand rule ,the electron will experienceforce in north directionand deflected in that direction . 
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| 6077. |
Explain the role of latent heat in the change of state of a substances |
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Answer» Solution :1.The heat energy absorbed at constant temperature during transformation of solid into liquid is called the latent heat of fusion. 2. This heat energy is UTILIZED for WEAKENING the bonds between the atoms or molecules in the solid and TRANSFORM it into liquid phase. 3. Similarly, the heat energy absorbed at constant temperature during transformation of liquid into GAS is called the latent heat of vapourization. 4. This heat energy is utilized for weakening the bonds between the atoms or molecules in the liquid and transform it into gaseous phase. 5. During transformation of gaseous phase to liquid phase and from liquid phase to solid phase, latent heat is given out by the substance to the atmosphere. |
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| 6078. |
What is the nature of the image formed by a concave mirror if the magnification produced by the mirror is +3? |
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Answer» The IMAGE MUST be virtual, erect, small and fromed BEHIND the mirror. |
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| 6079. |
Does sound get reflected at the surface of a solid? |
| Answer» Solution :Yes, SOUND GETS REFLECTED at the SURFACE of a solid as in the case of reflection of light. | |
| 6080. |
Obtain an expression for equivalent resistance of two resistors connected in a series combination. |
Answer» Solution :Two resistors of resistance `R_(1)` and `R_(2)` are connected in series. LET I be the current flowing through the CIRCUIT The current through each resistor is ALSO I. The two resistors joined in series is replaced by an equivalent SINGLE resistor of resistance R such that the potential difference V across it, and the current I through the circuit remains same. As `V=IR , V_(1)=IR =IR_(1),V_(2)=IR_(2)` `IR=IR_(1)+IR_(2)` `IR=I (R_(1)+R_(2)) or R= R_(1)+R_(2)` . |
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| 6081. |
Ideal gas equation: equation of state :: Law of volume:___________. |
| Answer» SOLUTION :CHARLES's LAW | |
| 6082. |
Whichtypeof magnetic force acts between (i) likepoles (ii) unlikepole of two magnets? |
| Answer» SOLUTION :(i) A forceof replusionacts between LIKE poles (N - N and S - S ) of two mangets . (ii) Whilea FORCE of attraction acts betweenunlikepoles(N-S and S - N) of twomagnets. | |
| 6083. |
Who was the first to observe the magnetic effect of electriccurrent ? |
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Answer» Faraday |
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| 6084. |
When a 12V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor. |
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Answer» Solution :Here, V = 12 V, 1= 2.5 mA ` = 2.5 XX 10^(-3) A, R= ?` The RESISTANCE of the resistor `R = V/I` `= 12/(2.5 xx 10^(-3))` `= 4800 Omega` `= 4.8 k Omega` |
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| 6085. |
Define a solar panel. |
| Answer» SOLUTION :A panel which is made up of many solar CELLS is KNOWN as solar panel. | |
| 6086. |
A convex lens of refractive index mu_(1) is kept in a medium of refractive index (mu_(2)) . A parallel beam of light is incident on the lens . Draw the path of the rays of light emerging from a lens . If mu_(1) gt mu_(2) |
Answer» SOLUTION :
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| 6087. |
A convex lens of refractive index mu_(1) is kept in a medium of refractive index (mu_(2)) . A parallel beam of light is incident on the lens . Draw the path of the rays of light emerging from a lens . If mu_(1) = mu_(2) |
Answer» SOLUTION :
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| 6088. |
Mention the application of thermite process in daily life? |
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Answer» SOLUTION :1) Joining RAILING of RAILWAY tracks. 2) Joining craked machine PARTS. |
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| 6089. |
A convex lens of refractive index mu_(1) is kept in a medium of refractive index (mu_(2)) . A parallel beam of light is incident on the lens . Draw the path of the rays of light emerging from a lens . If mu_(1) lt mu_(2) |
Answer» SOLUTION :
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| 6090. |
i] List the differences between electrical resistance and resistivity of conductor. ii] A copper wire of resistivity 1.63xx10^(-8)Omega-m has cross section area of 10.3xx10^(-4)cm^(2). Calculate the length of the wire required to make a 20Omega coil. |
Answer» Solution :i]  ii] `rho=1.63xx10^(-8)`OHM-m `A=10.3xx10^(-4)cm^(2)=10.3m^(2)` R = 20 Ohm `R=rhoL/A` then, `L=(20xx10.3)/(1.63xx10^(-8))=126.4m` `L=1.264xx10^(10)`m [cross section is very LARGE...that is why the RESISTANCE is too small.] If the area A = `10.3xx10^(-4)cm^(2)=10.3xx10^(-8)m^(2)` then `L=(20xx10.3xx10^(-8))/(1.63xx10^(-8))=126.4m` |
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| 6091. |
How does the valency of an element vary across a period ? |
| Answer» Solution :The valency of an element first INCREASES and then decreases ACROSS a PERIOD. | |
| 6092. |
The rest positions of the needles in a milliammeter and voltmeter not in use are as shown in (Fig. 3.61)(a). When a student uses these in his experiment, the readings of the needles are in the positions shown in (Fig. 3.61)(b). Find the corrected values of current and voltage in the experiment. . |
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Answer» 42 mA and 3.2 V |
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| 6093. |
Draw position-time graphs for two objects having zero relative velocity. |
Answer» SOLUTION :
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| 6095. |
Velocity of sound in air is ………..... |
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Answer» FASTER in DRY AIR than in MOIST air. |
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| 6096. |
A person is wearing spectacles which is (i) thicker at the centre (ii) thinner at the centre and (iii) made of two different types of lenses. Identify the type of lens and the defect of vision the person is suffering from, in each case. |
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Answer» Solution :(i) The LENS is convex and the defect of VISION is HYPERMETROPIA. (II) The lens is CONCAVE and the defect of vision is myopia. (iii) The lens is bifocal and the defect of vision is presbyopia. |
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| 6097. |
The problem of myopia is corrected by using convex lens of suitable focal length. |
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Answer» Solution :FALSE. The problem of myopia is corrected by USING CONCAVE LENS of suitable FOCAL length. |
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| 6098. |
Two bodies at different temperatures T_1 and T_2 , if brought in thermal contact do not necessarily settle to the mean temperature (T_1 + T_2)//2Explain. |
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Answer» Solution :Heat flows from higher temperature to LOWER temperature until the temperature BECOME equal. Two BODIES `m_1 = "mass of 'A'"T_1""T_2m_2` = mass of 'B' `c_1` = specific heat of A `"" c_2` = Sepecific heat of B Let `T_1 gt T_2` Heat will be lost by ‘A’ and gained by ‘B’ ACCORDING to principle of caloriemetry, Heat lost = Heat gained Let their common temperature attained be ‘T’, `m_1c_1(T_1-T)=m_2c_2(T-T_2)` `m_1c_1T_1-m_1c_1T = m_2c_2T-m_2c_2T_2` `m_1c_1T_1+m_1c_1T_2 = (m_1c_1+m_2c_2)T` `T = (m_1c_1T_1+m_2c_2T_2)/((m_1c_1+m_2c_2))` It is possible only, If `m_1=m_2=m,C_1=C_2=C,` `T=(T_1+T_2)/2` |
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| 6099. |
i] State Ohm's law ii] Explain the factors on which the resistance of a conductor depends. |
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Answer» Solution :i] Ohm.s law: When TEMPERATURE is constant, the potential difference across the ends of a metallic wire (V) is DIRECTLY proportional to the current (I) flowing through it, i.e., `VpropIorV=RI` where R is PROPORTIONALITY constant called resistance. ii] Resistance of a conductor (R) depends on: 1] Length of the conductor (l): Resistance is directly proportional to length of the conductor, i.e., `Rpropl` (2) Area of cross SECTION of the conductor (A): Resistance is inversely proportional to area of cross section of the conductor, i.e., `Rprop1/A` 3] Nature of material of the conductor: Combining 1 and 2, we get, `Rpropl/AorR=rhol/A` where `rho` is the constant of proportionality which depends on the nature of material of the conductor. 4] Temperature: The resistance of a conductor INCREASES with increase in temperature. |
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| 6100. |
When a current carrying conductor is kept in a magnetic field, it experiences a force. Llst the factors on which dkection of this force depends. |
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Answer» SOLUTION : It depends upon : (i) The DIRECTION of CURRENT through the conductor. (ii) The direction of MAGNETIC FIELD in which the conductor is placed. |
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