Saved Bookmarks
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.
| 13501. |
Write two examples of: - 5 marksa. Combination Reaction.b. Decomposition Reaction.c. Single Displacement Reaction.d. Double Displacement Reaction.e. Oxidation- Reduction Reaction. |
|
Answer»
Examples of Combustion Reaction 1 Burning of any kind of Wood or Coal to heat your home. 2 CAR and buses burn petrol or diesel to run. Example of decomposition reaction 1 The decomposition of carbonic acid in SOFT drinks, which can be represented by the chemical equation H2CO3 → H2O + CO2 2 The electrolysis of WATER to yield hydrogen and oxygen. Example of double displacement reaction 1 The metals such as potassium, sodium, lithium, etc. react more vigorously with dilute acids forming metal salts and hydrogen gases. 2 Metals such as aluminium, zinc, magnesium, iron, etc., react safely with dilute acids. example of double displacement reaction When solution of barium chloride reacts with the solution of sodium sulphate, white precipitate of barium sulphate is formed along with sodium chloride. BaCl2 + Na2SO4 ⇨ BASO4 + 2NaCl When sodium hydroxide (a base) reacts with hydrochloric acid, sodium chloride and water are formed. NaOH + HCl ⇨ NaCl + H2O example of oxidation and reduction 1) Cuo+H2(G)---> Cu+ H20 (I) Cuo is reduced to Cu H2 is oxidised to H20 Cuo is the oxidising agent H2 is the reducing agent 2) H2S + Cl2 ----> S+2HCI H2S is oxidised to S Cl2 is reduced to HCI Cl2 is the oxidising agent H2S is the reducing agent The substance which gets oxidised is
|
|
| 13502. |
Date:: Draw the atomic structures of any five elements from periodic table and also showarrangement of their electrons in specific shelves. |
| Answer» | |
| 13503. |
Aye anishka jyada hawa mein uadd mat anishkasharma hai |
|
Answer» Answer: With a view to fulfill the needs and requirements of the villagers every GRAM Panchayat has to perform some important FUNCTIONS such as the provision of safe drinking water, PAVING of streets, DEVELOPING and MAINTAINING good drainage system, ensuring the cleanliness of the village, upkeep of street lights, dispensary, ... |
|
| 13504. |
The gravitational force that acts on a mass is called itplz answer my question |
|
Answer» Answer: Gravity, also called gravitation, in mechanics, the universal FORCE of attraction acting between all matter. ... On Earth all bodies have a weight, or DOWNWARD force of gravity, proportional to their mass, which Earth's mass EXERTS on them. Gravity is measured by the acceleration that it gives to freely falling objects. Explanation: Answer is... Weight. Hope it Helps... |
|
| 13505. |
Why friction is called a necessary evil? |
|
Answer» Frictional force causes a lot of losses in general upkeep and wear and tear of MACHINERY. Hence it is considered as a evil. But almost all CRUCIAL tasks cannot be carried out without the PRESENCE of friction. ... Hence it is considered as a NECESSARY evil . Explanation: |
|
| 13506. |
while dragging or lifting on object negetive work is done by 1)the applied force 2)gravitational force 3)frictional force 4)reaction force plz tell option |
|
Answer» Answer: 2)GRAVITATIONAL FORCE 3)FRICTIONAL force both is CORRECT |
|
| 13507. |
A Fill in the blanks.1. The endocrine system consists of a collection of bag-like structures called2 Plant hormoneare known as |
|
Answer» HEY!! Here is your answer...... 1. glands 2. pytohormones
|
|
| 13508. |
Petroleum is purified in______ |
|
Answer» Answer: The FIRST part of refining crude oil is to HEAT it until it boils. The boiling liquid is separated into different liquids and gases in a DISTILLATION column. These liquids are used to MAKE petrol, PARAFFIN, diesel fuel etc. ... Liquids from refining oil still have to be changed to make them more useful. |
|
| 13509. |
12. According to the third law of motion when we push on an object, the object pushes back on us with an equal and opposite force. If the object is a massive truck parked along the roadside, it will probably not move. A student justifies this by answering that the two opposite and equal forces cancel each other. Comment on this logic and explain why the truck does not move. science |
|
Answer» Answer: According to the THIRD law of motion when we push an object, the object PUSHES us back with an equal and opposite FORCE. These two forces are called as action-reaction pair. Explanation: hope it HELPS you |
|
| 13511. |
The gravitational force that acts on a mass is called it |
|
Answer» Its weight is determined by the degree to which gravitational force acts on it. On Earth an object whose MASS is 100 grams is pulled towards the CENTRE of the planet with a force of 1 Newton. This is said to be the 'weight' of the object (i.e. the downward force it exerts because gravitational force is acting on it). hope its HELP you |
|
| 13512. |
Carbon dioxide is realised during photosynthesis t/f |
|
Answer» ........FALSE....... |
|
| 13513. |
Crystals of sugar can be formed afterof sugar-water solution |
|
Answer» Answer: LIKE all compounds made from these three elements, sugar is a carbohydrate. ... Under a microscope, you can see that sugar crystals aren't cubes, exactly, but ... ADD sugar to water, the sugar crystals DISSOLVE and the sugar GOES into solution. |
|
| 13514. |
What are the forces opposing the motion of a car when it is moving down a slope |
|
Answer» they are FRICTION,gravity Explanation:
|
|
| 13515. |
Write apportunities in the computer field |
|
Answer» Answer: The career opportunities for COMPUTER SCIENCE graduates can be classified into seven categories: programming and software development, information systems operation and management, telecommunications and networking, computer science RESEARCH, web and Internet, GRAPHICS and multimedia, training and SUPPORT, and computer |
|
| 13516. |
B) Find the difference between the greatest and the least5 digit number that can be written wsing the digits6, 2,704 and 35 |
|
Answer» GREATEST number=76432 Smallest number=23467 DIFFERENCE=76432−23467 76432 −23467 ___________ 52965 ___________ Therefore, the difference between the greatest and the least number that can be WRITTEN using the digits 6,2,7,4,3 each only once is 52,965. |
|
| 13517. |
False and true: soluble impurities can be removed by decantation |
|
Answer» false Explanation: |
|
| 13518. |
Discribe how to make the following tool from the thing or object found around you |
|
Answer» using paper CUP, stick & cardboard Explanation: HOPE it helps you plz mark as BRAINLIEST |
|
| 13519. |
The curtoorward somoin is pushWhich force is being applied here? How canthis force be increased? What will happen onapplying more force? When can we say that workis done by the applied force?com board.then come |
|
Answer» Answer: I am not SURE if you have any QUESTIONS or concerns please visit the plug-in SETTINGS ta mark me as Brainliest |
|
| 13520. |
Write 5 differences between reversible and irreversible changePlease do this I will definitely Mark your answer as Brainliest but correct one... |
|
Answer» A change which cannot HAPPEN backward, that is, it cannot be REVERSED is called an irreversible change. Difference between reversible changes and irreversible changes. Reversible changes
Explanation: Most physical changes are reversible changes. |
|
| 13521. |
Select the odd one out, also give reason: 1 Bacteria, protozoa, algae, fungi |
| Answer» | |
| 13523. |
S Describe how to make the followingtool from the things objects foundaround youor |
|
Answer» what is the TOOL............. |
|
| 13524. |
Predict the type of bonds between the following atoms. Given the electronegativities of the atoms:Ca=1.0, Cl=3.0, Na=0.9, O=3.5, Br=2.8, P= 2.1, S=2.5,a) Ca, a metal and Cl, a non metalb) P, a non metal and S, also a non metalc) Br and Brd) S and Oe)Na and Of) O and O |
|
Answer» Answer: HI yes I am not sure if you have any questions or concerns PLEASE VISIT the plug-in settings ta for now I am not sure if you have any questions or concerns please visit the plug-in settings ta mark me as Brainliest please thank my all ANSWERS please |
|
| 13525. |
Q. 2. Can you recall how green plants synthesise their own food? |
|
Answer» The process by which plants make food is named as PHOTOSYNTHESIS. Photosynthesis is the process in which green plants USE sunlight to make their own food. Photosynthesis requires sunlight, CHLOROPHYLL, WATER, and carbon dioxide gas. Chlorophyll is a substance in all green plants, especially in the leaves. Hope this helps you!!! Please do mark as brainliest and THANK this answer if it helped you!!!! |
|
| 13526. |
Why do we have muscular cramps |
|
Answer» Overuse of a muscle, dehydration, muscle strain or simply holding a POSITION for a prolonged period can cause a muscle cramp. In many cases, however, the cause isn't KNOWN. ALTHOUGH most muscle cramps are harmless, some may be related to an underlying medical condition, such as: Inadequate blood SUPPLY. |
|
| 13527. |
HOTS question C. Think and answer.1. Hasan, Harjit, Mary and Deepa got a chance to go to the moon.How much would they weigh on the moon? Complete the table.NAMEWEIGHT ON EARTHWEIGHT ON MOONHasan24 kg2- kgHarjit21 kg- kgMary and Deepa18 kg eachkg each |
|
Answer» Answer: 4kg,3.5kg,3kg ..............RESPECTIVELY |
|
| 13528. |
Metabolism of glucose is regulated by theinsulin hormonediabetesgrowth hormone |
|
Answer» INSULIN hormone Explanation: |
|
| 13529. |
Fill in the blanks:1. The accumulated underground water comes out in the form of _____________________. |
|
Answer» ........ CYCLONE....... FOLLOW me |
|
| 13530. |
HingeHow manysteeleton?o & Livotalbones are pecesent in human |
|
Answer» The question of how many joints there are in the human body is a difficult one to answer because it depends on a NUMBER of variables. This includes: The definition of joints. Some define a joint as a point where 2 bones CONNECT. Others suggest it is a point where bones connect for the purpose of moving body parts. The inclusion of sesamoids. Sesamoids are bones imbedded in tendons, but not connected to other bones. The patella (kneecap) is the largest sesamoid. These bones vary in number from person to person. The age of the human. Babies start out with about 270 bones. Some of these bones FUSE together during growth. Adults have about 206 named bones, with 80 in the axial skeleton and 126 in the APPENDICULAR skeleton. In short, there’s no definite answer to this question. The ESTIMATED number is between 250 and 350. pls mark as brainlist if this helped! |
|
| 13531. |
Write the difference between and foetus |
|
Answer» Answer: PLEASE give the full QUESTION FRIEND so that I can give you the precise answer |
|
| 13532. |
For anan atom electrically heutral, it must containSomenumber of |
|
Answer» ELECTRONS....... |
|
| 13533. |
Describe how to make the followingtool fromfrom the thingsthings or objects foundaround you |
|
Answer» '@& ... ... ... FOLLOW me..... |
|
| 13534. |
La) wheat(d) potato1. Which of the following is not a Rabi crop ? |
| Answer» | |
| 13535. |
Which of the crop that was produced abundantly through green revelution ?RiceWheatSugarcanePepper |
| Answer» | |
| 13536. |
Name the thermometer used to measure the maximum and minimum temperature of the day |
|
Answer» Answer: SIX's thermometer is USED...... Hope it will be usefull for you....Explanation: PLEASE mark me as a brainlist |
|
| 13537. |
What is embryo in plant .In one sentence |
|
Answer» The plant embryo, sometimes called the seed embryo, is the part of a seed or bud that contains the earliest forms of a plant's roots, stem and LEAVES and the embryo DEVELOPS after a fertilized adult plant FLOWERS, and is generally CONTAINED within a seed or bud. |
|
| 13538. |
Explain the reason why some substances burn with a flame |
|
Answer» Answer: SUBSTANCES when BURN produce HEAT and light. Some of them also produce flame with light. The substances which vaporize during burning PRODUCES flame. As these substances heat up, like CANDLES, the rising C-atoms produce light. Explanation: hope it helps you |
|
| 13539. |
Explain the importance of reproduction in organisms |
|
Answer» Answer: REPRODUCTION is the process by which new individuals are produced by the parents. The process of reproduction ENSURES that a PLANT or animal SPECIES does not disappear from Earth. This process is very important in maintaining stability in the ecosystem and for the continuation of life on earth. |
|
| 13541. |
C. Write (T) for true and (F) for a false statement.1. If force is used, an object will only move forward.3. Gravity has no effect on the weight of an object.2. Friction is less on ice.4. Friction is always in the direction that stops movement of the body.5. Work is done when a cloth dries in the Sun.6. Work is done when you push a mountain.7. The Sun is a source of energy.8. We can make electricity from falling water.9. Petrol is an example of a renewable source of energy.10. Work is done when you push or pull something. |
| Answer» | |
| 13542. |
The sun provides another abiotic factor in the ecosystem what is it and how is it measured |
|
Answer» Answer: Abiotic measurement equipment Abiotic factors can all be measured to show the LIVING conditions in an ecosystem. Light meters can be used to measure light intensity. ... ERRORS can be made when measuring light intensity by accidentally shading the light METER. ... SOIL moisture and soil pH meters are also available. Explanation: hope it helps you |
|
| 13543. |
I. Choose the correct option:1. Soil erosion is fastest in …… climates.a. hot and dry b. hot and moist c. cold and dry d. all of these2. Which of these adjustments helps to make the soil fertile?a. alteration of pH b. aeration c. addition of fertilizersd. all of these3. Which of these carries the inhaled air into tiny air bags in human beings?a. trachea b. bronchi c. bronchioles d. larynx4. Which of these helps to pull in oxygen-rich air into the lung?a. expansion of the diaphragm b. relaxation of the diaphragmc. up and down movement of the ribs d. tracheal tubes |
|
Answer» Answer: 2}aeration 3]bronchi 4] RELAXATION of DIAPHRAGM |
|
| 13544. |
What is embryo in plant |
|
Answer» Explanation: cell division to form an EMBRYO—a simple multicellular structure of undifferentiated cells (i.e., those that have not developed into cells of a specific type)—and EVENTUALLY a mature plant. The embryo consists of a bipolar axis that BEARS one or two COTYLEDONS, or seed leaves; in most dicots the cotyledons contain |
|
| 13545. |
Say this answer in a right way |
|
Answer» plastic-both glass JAR - transparent steel plate-opaque |
|
| 13546. |
What IS. Name the polymer used for making nonstick cookware.. Which of the two oxides of carbon, is acidic ?Can CNG be used in place of LPG as a domestic fuel ?llow and luminous ? |
|
Answer» Explanation: 1. Polytetrafluoroethylene 2. CARBON and water 3. No. |
|
| 13547. |
What is embryo in one sentence |
|
Answer» An embryo is the early stage of development of a multicellular ORGANISM. In general, in ORGANISMS that reproduce SEXUALLY, embryonic development is the part of the life cycle that begins just after fertilization and continues through the FORMATION of body structures, such as tissues and organs. |
|
| 13548. |
1 )name of the layer,2) depth of the layer ,3) characters...write it like a table.... |
|
Answer» Answer: I) The layers are CRUST, mantle, outer core and inner core. The first LAYER of the earth is crust and it has two PARTS i.e. oceanic crust and continental crust. The 2nd layer mantle CONSISTS of lithosphere, as the no SPHERE and convection currents. |
|
| 13549. |
Which is that chemical name that helps in sedimentation do fast |
|
Answer» Explanation: Adding special chemicals or some natural coagulants can accelerate sedimentation. Three common chemicals used are ALUMINIUM sulphate, polyaluminium CHLORIDE (ALSO known as PAC or LIQUID alum) and ferric sulphate. |
|