InterviewSolution
Saved Bookmarks
InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 1851. |
18-Calculate the percentage error in specific resistance where,radius of wire =0.26 ± 0.02 cml= length of wire= 156.0 + 0.1 cmR= resistance of the wire = 64 ± 2 ohm |
| Answer» <p>thanks yrr</p> | |
| 1852. |
Questions1) Give the examples of monobasic, dibasic and tribasic acids. |
| Answer» <p>Monobasic Acidsalso know as monoprotic acids</p><p>These are acids which yield one free hydrogen ion in solution for each molecule of acid ionized. An example of a monobasic acid is hydrochloric acid (HCl).HCl → H++ Cl-</p><p>Dibasic Acidsalso know as diprotic acidsThese are acids which yield two free hydrogen ions in solution for each molecule of acid ionized. An example of a dibasic acid is sulphuric acid H2SO4.H2SO4→ 2H++ SO42-</p><p>Tribasic Acidsalso know as triprotic acidsThese are acids which yield three free hydrogen ions in solution for each molecule of acid ionized. An example of a tribasic acid is phosphoric acid (H3PO4).H3PO4→ 3H++ PO43-</p> | |
| 1853. |
Pneumonia affects which part of tha body |
| Answer» <p>What causes pneumonia?</p><p>Pneumonia is usually caused when particular germs - bacteria, viruses or fungi - infect the lungs.</p><p>Normally, your body is able to filter most germs out of the air you breathe and stop infections from reaching the lungs. But even if germs do make it through to the lungs, or an infection spreads from another part of the body, a healthy person's body will be able to deal with the problem.</p><p>Bacteria that cause pneumonia</p><p>Bacteria need moisture and warmth to live - for which the human body is an ideal hostOne of the most common pneumonia-causing bacteria isStreptococcus pneumoniaorPneumococcusfor which there is now a vaccineOther common ones include the bacteriahaemophilusandstaphylococcusMore unusual bacteria are sometimes found, especially in people with underlying problems with their immune systems</p><p>As pneumonia spreads through the lungs, the body fights back. White blood cells attack the germs. The infected area becomes inflamed - part of the body's normal response to infection.</p><p>In a healthy person, these natural defences will overcome the pneumonia. But in someone with a weak immune system, the infection cannot be contained.</p><p>At the ends of the breathing tubes in the lungs are the tiny air sacs where oxygen passes into your blood - the alveoli. As these become infected, they start to fill up with fluid and pus.</p><p>This disrupts the normal process of gas exchange in your lungs, and stops oxygen from reaching the blood stream as well as causing a rise in blood levels of the waste gas carbon dioxide, which cannot be so easily removed. As a result the person becomes short of breath.</p><p>If left untreated, oxygen levels can fall to life-threatening levels. If the body's tissues - especially in the heart and brain - do not get the oxygen they need, confusion, coma, heart failure and eventually death may result.</p><p>Bacterial pneumonia is usually more serious as it causes more severe symptoms. However, viral pneumonia caused by the flu virus can be life-threatening as well if it triggers a particularly severe inflammation of the lungs or is complicated by a secondary bacterial infection.</p><p>Who is most at risk?</p><p>Anybody can be affected by pneumonia but for some it can be far more serious. This is because healthy people tend to fight off viral pneumonia on their own or successfully battle bacterial pneumonia with the aid of antibiotics.</p><p>However, those with chronic disease (especially lung disease such as Chronic Obstructive Pulmonary Disease, orheart disease) or compromised immune systems are less likely to respond to treatment, less able to cope with the stress on the organs caused by pneumonia and more likely to develop serious complications. This is why it is still a leading cause of death among the elderly and seriously ill.</p><p>When is pneumonia most likely to strike?</p><p>In the UK, pneumonia affects around one in 100 adults each yearViral infections that are common in winter, such as flu, can increase the risk of pneumoniaPneumonia is therefore most likely to strike in the colder months of autumn and winterPneumonia can affect people of any age, although it is more common in infancy and among the elderly</p><p>Source:NHS Choices</p><p>Find out how the body fights off viruses</p><p>A weakened immune system can be caused by many factors including age, illness and disease. The following are included in this category:</p><p>Babies and infantsOlder peoplePeople with long-termheart, lung and kidney diseasesThose withdiabetesPeople withcancer, especially those receiving chemotherapy or who have leukaemia or lymphomaPeople who smoke and those who drink alcohol to excessPeople receiving drugs that suppress the immune system to treat an existing illness</p> | |
| 1854. |
Compare the structures of H2O and H2O2 |
| Answer» | |
| 1855. |
whatis the name for H3PO4 |
| Answer» <p> Phosphoric acid</p> | |
| 1856. |
2.) Define vaccine. |
| Answer» <p>Avaccineis an inactivated form of bacteria or virus that is injected into the body to simulate an actual infection. Because the injected microorganisms are 'dead,' they don't cause a person to become sick. Instead, vaccines stimulate an immune response by the body that will fight off that type of illness</p> <p>Thanks </p> | |
| 1857. |
d.Who discovered the vaccine against rabies? |
| Answer» <p>Louis Pasteur and Émile Roux,developedthe firstrabies vaccination.</p> | |
| 1858. |
1. Differentiate between homogeous and heterogeneous mixtwith examples. |
| Answer» | |
| 1859. |
0010. At 27 c, hydrogen is leaked through a tiny hole into a vessel for 20 minutes. Another unknown gas at sametemperature and pressure as that of hydrogen is leaked through same hole for 20 minutes. After the effusion ofthe gases the mixture exerts a pressure of 6 atm. The hydrogen content of the mixture is 0.7 mole. if the volumeof the container is 3L, what is the molecular weight of the unknown gas?nd 92 em Ha pressure |
| Answer» | |
| 1860. |
Rain drop of radius 0.2 mm falling with velocity of2 m/s. If coefficient of viscosity of air is 1.8 x 104Ns/m', determine viscous force acting on the drop. |
| Answer» <p>F = 6πanv</p><p>= 6*3.14*0.2*10^-4*1.8*10^-4*2</p><p>= 13.5648*10^-8 N</p> | |
| 1861. |
Which of the following pair of elements represents a mole ratio of 1:1?(a) 10 g of calcium and 12 g of magnesium(c) 12 g of carbon and 20 g of calcium(b) 12 g of magnesium and 6 g of carbon(d) 20 g of sodium and 20 g of caleiurm |
| Answer» | |
| 1862. |
vl = 50voltvc=30voltv=१ |
| Answer» <p>V=Vl= Vc = 50-30 = 20 V</p> <p>v=200voltf,=50Hzi=2R=?p=?Q=?</p> <p>kindly post this question separately.</p> | |
| 1863. |
\begin{array} { l } { \text { Name the stimuli which cause photot } } \\ { \text { ropism, chemotropism, seismonast) } } \\ { \text { and hydrotropism. } } \end{array} |
| Answer» <p>Plant tropisms are the result ofdifferential growth. This type of growth occurs when the cells in one area of a plant organ, such as a stem or root, grow more quickly than the cells in the opposite area. The differential growth of the cells directs the growth of the organ (stem, root, etc.) and determines the directional growth of the entire plant. Plant hormones, likeauxins, are thought to help regulate the differential growth of a plant organ, causing the plant to curve or bend in response to a stimulus. Growth in the direction of a stimulus is known aspositive tropism, while growth away from a stimulus is known as anegative tropism. Common tropic responses in plants include phototropism, gravitropism, thigmotropism, hydrotropism, thermotropism, and chemotropism.</p><p>Phototropismis the directional growth of an organism in response to light. Growth toward light, or positive tropism is demonstrated in many vascular plant, such asangiosperms, gymnosperms, and ferns. Stems in these plants exhibit positive phototropism and grow in the direction of a light source.Photoreceptorsinplant cellsdetect light, and plant hormones, such as auxins, are directed to the side of the stem that is furtherest from the light. The accumulation of auxins on the shaded side of the stem causes the cells in this area to elongate at a greater rate than those on the opposite side of the stem. As a result, the stem curves in the direction away from the side of the accumulated auxins and toward the direction of the light. Plant stems andleavesdemonstratepositive phototropism, while roots (mostly influenced by gravity) tend to demonstratenegative phototropism. Sincephotosynthesisconducting organelles, known aschloroplasts, are most concentrated in leaves, it is important that these structures have access to sunlight. Conversely, roots function to absorb water and mineral nutrients, which are more likely to be obtained underground. A plant's response to light helps to ensure that life preserving resources are obtained.</p><p>Heliotropismis a type of phototropism in which certain plant structures, typically stems and flowers, follow the path of the sun from east to west as it moves across the sky. Some helotropic plants are also able to turn their flowers back toward the east during the night to ensure that they are facing the direction of the sun when it rises. This ability to track the sun's movement is observed in young sunflower plants. As they become mature, these plants lose their heliotropic ability and remain in an eastward-facing position. Heliotropism promotes plant growth and increases the temperature of eastward-facing flowers. This makes heliotropic plants more attractive to pollinators.</p> <p>Please give me short answer</p> | |
| 1864. |
1: Factorize : 3x + 11x + 10., |
| Answer» <p>x=-5,-6 is the correct answer </p> <p>x=-2,-5/3 is the correct answer </p> <p>3x² + 11x +10x (3x + 11 + 10) =3x + 21= x = 21/3 x = 7 answer</p> <p>3x²+11x+10=03x²+6x+5x+10=03x(x+2)+5(x+2)=0(3x+5)+(x+2)=03x+5=03x=-5x=-5/32+x=0x=-2</p><p>value of x is -5/3,-2</p> | |
| 1865. |
5.Design an experiment to demonstrate hydrotropism. |
| Answer» | |
| 1866. |
1 (What is Osmosis ? Differentiate betweenOsmosis and diffusion.)2 |
| Answer» <p>Osmosis is the result of diffusion across a semipermeable membrane from a lower concentration to a higher one.</p> | |
| 1867. |
osmosis |
| Answer» <p>Osmosis, the spontaneous passage ordiffusionofwateror othersolventsthrough a semipermeablemembrane(one that blocks the passage of dissolved substances—i.e., solutes). The process, important inbiology,</p> <p>the process of gradual or unconscious assimilation of ideas, knowledge, etc.</p> | |
| 1868. |
9.The electro chemical equivalent of Ag is 0.001118gm calculate clectro chemical equiva lent ofoxygen.[0.0000828] |
| Answer» | |
| 1869. |
What is an electric fuse? |
| Answer» <p>An electric fuse is a safety device used to limit the current in an electric circuit. The use of a fuse is to safeguard the electric circuit and the electric appliances connected in the electric circuit from being damaged.</p> | |
| 1870. |
An inductor of inductive reactance 50Ω and a 50Ω register are connected in series with 220 V)0 Hz sources. What is the ratio of the vol age across the resistor to the source voltage? |
| Answer» | |
| 1871. |
Mention an expression for inductive reactance of an inductor. |
| Answer» <p>When a changing signal such as a sine wave is applied to a perfectinductor, i.e. one with no resistance, thereactanceimpedes the flow of current, and follows Ohms law. Theinductive reactance of an inductoris dependent upon itsinductanceas well as the frequency that is applied.</p> | |
| 1872. |
6.Mention an expression for inductive reactance of an inductor |
| Answer» <p>Inductive Reactance of a coil depends on the frequency of the applied voltage as reactance is directly proportional to frequency</p> | |
| 1873. |
What alternative devices can we use if there is a sudden breakdown in electric suppy |
| Answer» <p>Electric generator,invertor etc.can be used if there is a sudden breakdown in electric supply.</p> | |
| 1874. |
Biodegradable pollutants are(a).DDT(c) municipal sewage |
| Answer» <p>Answer of a question C</p> <p>answer of a question is C</p> <p>c is the right answer</p> | |
| 1875. |
A hollow plastic ball is takento the bottom of a trough of water & released therei) Give reasons for this phenomena?i) What happens to the ball?i |
| Answer» | |
| 1876. |
ols, pressure is equal to-A/F, where A is area and F is forced(F where d is distance and F is force(b) F/A, where A is area and F is(d) F/d, where d is distance and |
| Answer» <p>Pressure=Force/Area, A is area and F is force.</p> | |
| 1877. |
Exercise TFor Formative and Summ. Answer the following questions1.How can we avoid accidents?2. Mention three things we should be ca3.What are the safety measures we sho |
| Answer» <p>Always be alert. There's a reason why many workers insist upon that morning coffee. </p><p>Don't rush your work. </p><p>Wear required safety gear. </p><p>Follow instructions to a tee. </p><p>Pay attention to and follow emergency drills. </p><p>Insist upon proper training.</p> <p>What were the accidents?</p> | |
| 1878. |
154. Discuss tropic movements in plants. |
| Answer» <p>The below mentioned article will highlight the six types oftropic movements in plants. The six types are: (1) Thigmotropism (Haptotropism) (2) Phototropism (3) Geotropism (4) Thermotropism (5) Chemotropism and (6) Hydrotropism.</p><p>hope this will help you like my answer and Mark it as best answer</p> <p>1. hydrotropism 2.thigmotrishms 3.chemotrisms 4phototropism .sahi hai to like plss.🎗🎗🥇🏅🏅🎗🥇🏆🎖🥉🥉</p> | |
| 1879. |
WriteTrue (I)or False (F) against each of the following statemena 16:24: 20:301 (b) 21:6:: 35: 102:18: 28:12 |
| Answer» | |
| 1880. |
Detine electrostatic potential and ts unit Obtain expression for electrostaticpoenta at a point P in the fieid due to a point charge |
| Answer» <p>Anelectric potential is the amount of work needed to move aunitpositive charge from a reference point to a specific point inside the field without producing any acceleration and its SI unit is joule per coulomb I.e Volts</p> <p>not a expression we get</p> | |
| 1881. |
Answer the following questions in brief.travel5. Writ1.What are luminous objects? |
| Answer» <p>Luminous objects are the things that emit their own light.Eg. Sun,torch etc.</p> | |
| 1882. |
state the relationship current and flux for parallel magnetic flux |
| Answer» <p>flux=LIwhere L is mutual inductanceand I is current</p> | |
| 1883. |
Define: relactunes magnetic flux |
| Answer» <p>Ans :- Magnetic reluctance, or magnetic resistance, is a concept used in the analysis of magnetic circuits. It is defined as the ratio of magnetomotive force to magnetic flux. It represents the opposition to magnetic flux, and depends on the geometry and composition of an object.</p> | |
| 1884. |
3.1 How would you determine the standard electrode potential oMg/Mg? |
| Answer» | |
| 1885. |
Would the bulb glow after completing the circuitshown in Fig. 12.14 if instead of safety pin weuse an eraser? |
| Answer» | |
| 1886. |
Fur resistors of 100 Ω each are connected in the form of a square. The effective resistance along thediagonal isa)400 Ωsb) 200Ωc) 300 Ωd) 100Ω |
| Answer» <p>2 pairs are in series and the resultants in parallelhence100+100=200ohms</p><p>and 100+100=200ohmsthese two in parallelR=200*200/400=100ohms</p> | |
| 1887. |
6. Would the bulb glow after completing the circuitshown in Fig. 12.14 if instead of safety pin weuse an eraser? |
| Answer» | |
| 1888. |
Would the bulb glow after completing the circuitshown in Fig. 12.14 if instead of safety pin weuse an eraserf?6.Fig. 12.14 |
| Answer» | |
| 1889. |
d Would the bulb glow after completing the cireuitshown in Fig. 12. 14 if instead of safety pin weuse an eraser?rig |
| Answer» | |
| 1890. |
G.How do the mountaineers cross a river? |
| Answer» <p>the mountainer should face upstream, while leaning on the poles.they should move one point at a time, maintaining one foot downstream of the other, akind of shuffle step and moving along sideways or diagonally like a crab. </p> | |
| 1891. |
For the processparameters isH2O() (Ibar, 373K)-> H2O(g)(1 bar, 373 K), the correct set of thermodynamics[UIT-2007]- ve(D) AG- ve, AS+ ve(C) AG +ve, AS 0 |
| Answer» | |
| 1892. |
r.Which statement about floodplains is true?A. Floodplains are an example of streamerosionnB. Floodplains are places where the soil isinfertile.C. Floodplains are narrow, steep-walled, andV-shaped |
| Answer» <p>The answer is Option C.</p> <p>thanks</p> | |
| 1893. |
.Define ionic mobility. Write its SI Unit. |
| Answer» | |
| 1894. |
35. A ball of mass m moving at a speed v makes a head-oncollision with an identical ball at rest. The kinetic energyof the balls after the collision is three fourths of theoriginal. Find the coefficient of restitution. |
| Answer» | |
| 1895. |
51 The ratio of kinetic energy of a body orbitingnear the earth's surface and the kinetic energYof the same body escaping the earth'sgravitational field is(A) 1 (B) 2 (C) 2 (D) 0.5 |
| Answer» | |
| 1896. |
5. Describe how nitrogen gets fixed in nature. |
| Answer» | |
| 1897. |
9.How do forests help in maintaining the balance between oxygen and carbon dioxide? |
| Answer» <p>Ans :- Plants release oxygen in the atmosphere during the process of photosynthesis. This oxygen is inhaled by the animals for respiration.</p><p>During respiration, they release carbon-dioxide which is absorbed by plants. In this way the oxygen and carbon dioxide cycle goes on. Since forests contain a large number of plants, they help much in this cycle and maintain balance in nature.</p><p>PLEASE LIKE AND SHARE THIS APP</p> | |
| 1898. |
Explain 'Nitrogen cycle' in details |
| Answer» <p>The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes</p><p>hit like if you find it useful</p> | |
| 1899. |
what is mean by nitrogen cycle? |
| Answer» <p>The nitrogen cycle is the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.</p> | |
| 1900. |
7. Define deforestation?8. What is humus?9.How do forests help in maintaining the balance between oxygen and carbondioxide? |
| Answer» <p>Ans :- Deforestation, clearance, or clearing is the removal of a forest or stand of trees from land which is then converted to a non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated deforestation occurs in tropical rainforests.</p><p>In soil science, humus denominates the fraction of soil organic matter that is amorphous and without the "cellular cake structure characteristic of plants, micro-organisms or animals." Humus significantly affects the bulk density of soil and contributes to its retention of moisture and nutrients.</p><p>PLEASE LIKE AND SHARE THIS APP</p> | |