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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.
| 8101. |
What is the speed of scape velocity, it can increase or decrease? |
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| 8102. |
How to solve the mcq\'s of force and Laws of Motion class 9 |
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Answer» There are no mcq in ncert book With your hands and brain |
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| 8103. |
Formula for buoyancy -- |
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Answer» Vp(rho)gOrLoss in weight buoyant force = volume of the object * density of the liquid * acceleration due to gravity |
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| 8104. |
Samples papers of class 9 |
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| 8105. |
Can a compound formed only with metals may have ions? |
| Answer» no as na is also an ion | |
| 8106. |
What do you mean by melting point |
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Answer» The definite temperature at which a solid starts melting is called melting point . Example- melting point of ice is 0 degree Celsius. Melting point is a process in which solid change into liquid . For example ice change into water The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its melting point. The constant temperature in any substance will is knownn as melting point Melting pointThe constant temperature at which a solid becomes liquid upon absorbing heat under normal pressure is called as the melting point of that solid. [Pressure of 760 mm of Hg]Melting point (Solid state → Liquid state) |
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| 8107. |
Different type of *** position |
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| 8108. |
What is ***** and its images |
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| 8109. |
What is the example of enucleated cell |
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| 8110. |
What is Bohr\'s model |
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Answer» He proposed that only discrete orbit is allowed in an atom & during revolution electrons do not radiate energy Bohr modlel was the perfect model of atom |
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| 8111. |
What is the force on a particle of mass \'m\' placed at height equal to to radius of earth |
| Answer» F=mgg at surface of earth is 9.8m/sF=9.8m N | |
| 8112. |
What is atomic spectrom????? |
| Answer» \tWe observe that when a ray of white light falls on a prism it experiences refraction twice.\tOnce when it travels from the rarer medium (air) to a denser medium (glass) and again from the denser medium (glass) to a rarer medium (air).\tFinally, we observe a band of colors, called spectrum, formed out of a ray of white light. If we observe this spectrum more closely, the color having a smaller wavelength deviates the most and vice versa.\tThus, a spectrum of colors ranging from red to violet is observed where red having the longest wavelength suffers the least deviation.\tThis kind of spectrum is called a continuous spectrum as violet merges into blue, blue into green and so on.However, the emission spectrum of atoms in the gas phase, do not exhibit a continuous spread of wavelength from one color to others. Rather, the emitted light consists of a specific wavelength having dark spaces existing between them. Such kind of spectra is known as atomic spectra or line spectra. | |
| 8113. |
A particle is moving in a circular path of radius r. The displacement after half a circle would be: |
| Answer» Radius of the circle = rDisplacement(shortest path between the initial and the final point) after half the circle = 2 × r = 2r | |
| 8114. |
State and drive universal law of gravitation . |
| Answer» Newton\'s law of universal gravitation states that a particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. | |
| 8115. |
Immunization |
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Answer» What do you want to know It strengthens defence mechanism of the body against infections. |
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| 8116. |
differentiate between infectious and non infectious |
| Answer» \tINFECTIOUS DISEASESNON-INFECTIOUS DISEASES1. Caused due to attack of pathogens1. Caused by factors other than pathogens2. Caused due to extrinsic factors2. Caused due to intrinsic factors3. Transmitted from one person to another3. Do not get transmitted from one person to another4. Transmission of diseases occurs through direct contact or some medium (air, water, vectors)4. Transmission in case of hereditary diseases is from parent to offspring5. Community hygiene can reduce the occurrence of these diseases5. Community hygiene is ineffective in reducing the occurrence of these diseasesE.g. Cholera, MalariaE.g. Diabetes, Goitre\t | |
| 8117. |
Kind of tissue explain |
| Answer» The tissues are divided into plant tissues and animal tissues.\tPLANT TISSUES: Plant tissues are of two main types, viz. meristematic tissue and permanent tissue.\tANIMAL TISSUES: Animal tissues are of four types, viz. epithelial tissue, connective tissue, muscular tissue and nervous tissue. | |
| 8118. |
What is matrox in tissue ?? |
| Answer» Matrix is the tissue in animal or plant cells in which specialized structures are fixed to a surrounding mass. For example, there are matrix such as mitochondrial matrix and Golgi apparatus matrix. | |
| 8119. |
Why there is rain where trees are there? |
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Answer» Because more trees more transpiration Due to more transpiration |
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| 8120. |
Name two anti.biotics cause disease . |
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Answer» Name not definition ok Antibiotics does not cause disease but there are some side effects of antibiotics. Antibiotics kills the bacteria. |
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| 8121. |
A 5kg ball is dropped from a height of 10m. Find its initial potential energy |
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Answer» Potential energy = mgh = 5*9.8*10 = 490 Initial potential energy is zero Formula of potential energy is mgh.find it yourself. |
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| 8122. |
What is food security? |
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Answer» Food security means availability, accessibility and affordability of food to all person all time Food is as essential for living as air is for breathing. But food security means something more than getting two square meals. Food security has the following dimensions(a) availability of food means food production within the country, food imports and the previous years stock stored in government granaries.(b) accessibility means the food is within reach of every person.(c) affordability implies that an individual has enough money to buy sufficient, safe and nutritious food to meet one’s dietary needs |
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| 8123. |
Final exam mai tum sab first term ka revise kab karoge?? Please reply |
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Answer» Sample papers se Thnx Pehle se hi tyari karni hoti hai exam ke time bas ek bar revise karna chahiye |
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| 8124. |
the locomotory organs of echinodermata are |
| Answer» Tube feet | |
| 8125. |
define Taxonomy |
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Answer» Branches of bology deals with classification is called taxonomy The scientific process of arranging things into group |
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| 8126. |
write a note on fungi |
| Answer» Fungi:Characteristics of Fungi:\xa0\tFungi are heterotrophic and eukaryotic organisms.\tThey are normally saprophytes. \tTheir cell walls are composed of chitin. \tTheir reserve food material is glycogen.\tMany of them have the capacity to become multicellular organisms at certain stages in their lives.Examples – Aspergillus, Penicillium and Agaricus. | |
| 8127. |
On which principal did a Rocket works |
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Answer» Third law of Newton Newton\'s third law 3rd law of Newton laws Newtonś third law Newton\'s third law because it removes gases from inside that helps it to go up Newton\'s 3rd law |
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| 8128. |
What is balanced forces give an example |
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Answer» A boy pressing a ballon When we apply equal force from both side and there is no movement of object is called balanced force |
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| 8129. |
Freefal |
| Answer» When an object falls freely under the effect of gravity only then it is said to be freefall | |
| 8130. |
two elements which plants get from air and water |
| Answer» From air co2&o2 from water hydrogen &o2 | |
| 8131. |
On what factors does on buoyant force |
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Answer» Buyont forcedepends upon following factors- The buoyant force depends directly upon:\tVolume of the fluid displaced.\tDensity of the fluid in which the body is immersed.\tAcceleration due to gravity at the place. |
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| 8132. |
Name the physical quantity on which the inertia of a body depends? |
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Answer» Mass Mass Mass is the physical quantity on which the inertia of a body depends.Mass is the amount of matter contained in the body whereas inertia is the state of body at complete rest or in motion.Thus, the matter composition of the object determines the inertia of the object. |
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| 8133. |
Define sexual intercourse with help of example |
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| 8134. |
What is the audible range of human ear |
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Answer» 20Hz to 20Khz or 20000Hz 20hz to 20000hz 20 hz to 20000 hz The audible range of human ear is - 20Hz to 20KHz Don\'t know |
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| 8135. |
State law of conservation of momentum |
| Answer» Total p after collision=total p before collision | |
| 8136. |
What is floatation |
| Answer» Floatation\xa0is the act, process, or state of floating.\tIf the buoyant force exerted by the liquid is less than the weight of the object, the object will sink in the liquid.\tIf the buoyant force exerted by the liquid is equal to the weight of the object, the object will float in the liquid.\tIf the buoyant force exerted by the liquid is more than the weight of the object, the object will rise in the liquid and then float.So, we can conclude that an object will float in a liquid if the upward buoyant force it receives from the liquid is great enough to overcome the downward force of its weight. | |
| 8137. |
Which type of organisms are in the kingdom chordata |
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Answer» Thank you bro for giving answer Chordates are animals characterized by the presence of notochord at some stage during their development. Members possess a hollow nerve cord and pharyngeal gill slits. The other general characteristic features of Chordates are as follows:\tThey are bilaterally symmetrical, triploblastic, and coelomate with the organ-system level of organization.\tThey hold a post-**** tail\tThe body includes a closed circulatory system.\tIn some members of Phylum Chordata, the notochord is present only in the larval tail, and in some, it is present throughout their life from head to tail region.\tChordates have many sub-divisions and\xa0Protochordates\xa0are one of the earliest to evolve.Examples of this phylum include Ascidia, Salpa, Doliolum, Amphioxus or Lancelet. |
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| 8138. |
Wht is a major role of kingdom annelida |
| Answer» Characteristics of Annelida:(i) Body triploblastic, bilaterally symmetrical, soft, elongated, vermiform and cylindrical or dorsoventrally flattened.(ii) Exoskeleton absent; body is covered by a thin cuticle.(iii) Alimentary canal is tube-like, complete and extends straight from mouth to ****.(iv) Reproduction is by sexual means. Sexes may be united (hermaphroditic) or separate.(v) True coelomate animals with closed blood vascular system. Coelom allows true organs to be packaged in the body structure.(vi) They live in a variety of habitats. Mostly aquatic, marine or fresh water. Some are terrestrial, burrowing in tubes, some free-living forms. Example: Nereis (sand worm) and Hirudinaria (leech).\xa0 | |
| 8139. |
What is energu |
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Answer» Capacity to do work is called energy.The rate of change of energy is called power The rate of us power |
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| 8140. |
Sums for echo |
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| 8141. |
Fullform of RNA?? |
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Answer» Ribonucleic acid Ribonucleic Acid |
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| 8142. |
Lab manual book |
| Answer» It is a pratical book use in lab for pratical | |
| 8143. |
Explain method of cure of communicable disease |
| Answer» Acute disease | |
| 8144. |
Difference Between non chordates and chordates |
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Answer» \tNon-chordatesChordatesVertebral column is absentVertebral column is presentCentral nervous system is solid and ventralIt is hollow and dorsalIf heart is present, it is dorsalHeart is ventralIf haemoglobin is present, it is dissolved in plasma.Haemoglobin is present in Red blood cells.No post **** tailPost **** tail is presentE.g. Protozoa, Arthropods, AnnelidaE.g. Aves, Reptiles, Mammals\t Chordates:\xa01. A notochord is present at some stage in the life of a chordate.2. Central nervous system is dorsal and hollow.3. Gill slits are present in the pharynx either in the embryo or adult.4. Tail is present at some stage in the life of the chordate.5. Heart is ventral.6. If present RBCs contain respiratory pigment (haemoglobin).\xa0Non- chordates:1. Notochord is not present at any stage in the life of a non-chordate.2. Central nervous system is ventral and solid.3. Gill slits are absent.4. Tail is absent.5. Heart is dorsal (if present).6. If haemoglobin or other respiratory pigment is present, it is found in the blood plasma. RBCs are absent. |
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| 8145. |
What is nanometre |
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Answer» Nanometre is a very, very small unit of measuring length. It is written as nm.1 nanometre = 1/109 metreSo, 1 nm = 10-9 m 10^(-9) |
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| 8146. |
Role of atmosphere |
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Answer» It acts as a blanket of earth The atmosphere protects the earth from the radiations and cosmic rays coming from the outer space. The ozone layer in the earth’s atmosphere protects the earth from the harmful ultraviolet radiations. The dense layers of molecular gases absorb the cosmic rays, gamma rays, and X-rays thereby blocking most of the harmful effects. Tons of space debris strike the earth every day. It is the molecules present in the atmosphere that destroy them before they reach the ground. |
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| 8147. |
If number of protons and number of netrons are 8 and 6 respectively. What is the charge on atom |
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Answer» Positive charge + Positive charge |
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| 8148. |
What is the cgs unit of force ? |
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Answer» Cgs unit of force is Dyne In the metric system, the force is measured in kilogram and is denoted by symbol kgf. However, there are also smaller measures called the cgs system. When we talk about the CGS unit of force, it is measured in dynes and is denoted as gf. Cgs unit of force is dyne |
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| 8149. |
Diagram of adipose tissue |
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| 8150. |
Why sound wave are called mechanical waves |
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Answer» Because it needs medium for the propagation Because sound needs a medium to travel Disturbance that moves through a medium is called mechanical wave. As sound waves also need medium to propagate that\'s why these waves are called mechanical waves. |
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