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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.
| 2752. |
Why we adding acid to water not warer to acid |
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Answer» ong>ANSWER: Dilution of CONCENTRATED acid is an exothermic process. If water is ADDED to a concentrated acid, the heat generated may cause the mixture to splash out and cause burns. When the acid is added to water slowly with constant stirring, the mixture will not splash out. |
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| 2753. |
Thank you ❤What is trust? |
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Answer» ONG>ANSWER: Bhrosha = trust Explanation: hi I am ӁJØKÊRӁӁJØKÊRӁӁJØKÊRӁ |
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| 2754. |
11 cari silkmoths APPLICATION TO DIALY LIFE, CONCERN TO BIODIVERSITYWrite the applications of indicators in identification of acids and base |
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Answer» ong>Answer: Acid-base indicators are chemicals used to determine WHETHER an aqueous solution is acidic, NEUTRAL, or alkaline. Because acidity and ALKALINITY relate to pH, they MAY also be known as pH indicators. Examples of acid-base indicators include litmus paper, phenolphthalein, and red cabbage JUICE |
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| 2755. |
What is unit of information called? |
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Answer» ong>Answer: The BASIC unit of information is called BIT. It's a short form for binary digit. It takes only two values, 0 or 1. All other units of information are derived from the bit. For example, 8 bits is called a BYTE, which is COMMONLY used |
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| 2757. |
Name four things that is use in photosyenthesis |
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Answer» ong>ANSWER: |
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| 2759. |
What are the main causes of water pollution? short answer need |
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Answer» ong>ANSWER: Explanation: industrial Waste. ... Sewage and WASTEWATER. ... MINING ACTIVITIES. ... Marine Dumping. ... Accidental Oil Leakage. ... The burning of fossil fuels. ... Chemical fertilizers and |
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| 2760. |
Convent the following word equahore to mduulan balana thon them.equations andD Selbhus disside + Potassium hydroxide >> Potassium selbliche |
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Answer» ONG>Explanation: i could only UNDERSTAND pottasium hydroxide. plz write the WORD equation properply. |
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| 2761. |
With the help of an activity prove that soil contains water |
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Answer» ong>Answer: When the SOIL is in the natural state, it contains moisture and helps in growth of PLANTS. ... The water vapour in test tube raises up and reaches the colder temperature of the test tube and the VAPOURS condense due to TOUCH of colder surface and the test tube is closed proving the 'existence of water' in soil. |
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| 2762. |
What happens when NaCl is heated ?( Note: I am not saying aqueous solution of NaCl) |
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Answer» Answer: Explanation: BASICALLY NaCl is the chemical name for common table salt. If it is in HYDRATED FORM the water evaporates out of it FIRST and it remains purely solid. Salt basically melts it at a temperature of around 800 degrees, further heating then results in boiling at around 1398 degrees |
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| 2763. |
A graphical plot of the temperature versus volume of a gas will produce a straight line. If different gases are studied and the temperature-volume data is plotted on a graph, the extrapolation of the graphs will all intersect at the same temperature, -273°C. The Kelvin equivalent of this temperature is 0 K, or absolute zero. Remember to convert from Celsius to Kelvin is: K = °C + 273The relationship between Kelvin temperature and the volume of gas is expresses as Charle’s Law: the volume of a confined gas at a constant pressure is directly proportional to its Kelvin temperature or:V1 / T1 = V2 / T2Complete the following analysis and conclusion.1)Calculate the Kelvin temperatures of the water and record your answers in the data table.2)Find the change in the volume of air in the flask from your data and record in data table.3)Use the equation V1 / T1 = V2 / T2 to calculate the expected volume of air when cooled in tap water.4)How do the expected final volume and the actual final volume compare?5)What is the significance of elevating or lowering the flask until the water level in the flask is even with the water level in the beaker or container?6)Construct a graph of the data. Plot the volume of the gas at room temperature in tap water and in ice water on the y axis. Plot the Kelvin temperature on the x-axis. Print out graph paper for your plot. (Click here for graph paper.)7)Extend the plotted line downward until it crosses the temperature axis. This process of extending a graph beyond the experimental data is called extrapolation.8)At which temperature is the line predicted to cross the x-axis?9)At which temperature did the line actually cross the x-axis?10)Account for any deviation betweeen the predicted temperature line extrapolation and the actual line extrapolation.11)Real World Chemistry - Explain why bottled gas containers are equipped with a relief valve? |
| Answer» HELLO MAY you are GOOD student as kevlin and MANY other sorry I don't know ANSWER may someone help you give question in a short way so i can read it easily | |
| 2764. |
What is the electron |
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Answer» Electron is a sub - atomic particle that MOVES AROUND the nucleus in fixed orbit i.e. ENERGY level. |
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| 2765. |
.What do you understand by the term Latent heat of fusion? How much is the latent heat of fusion of ice? |
| Answer» LATENT heat of fusion is the amount of heat energy required to change 1kg of SOLID into LIQUID at its melting POINT | |
| 2766. |
Why co2 has zero dipole moment, why not So2 |
| Answer» ORIGINALLY Answered: The moleculeSO2 has a dipole moment. ... This MOLECULE does not have a permanentdipole moment (i.e., the dipole moment of CO2 is zero). The REQUIRES the molecule to be linear because oxygen is more electronegative than carbon and therefore the C=O BOND will be polarize | |
| 2767. |
How does the water kept in an earthen pot become cool during summer? |
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Answer» Hey friend here is UR answer. |
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| 2768. |
What do you mean by solid ice? Why CO2 is kept under low pressure? |
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Answer» HEY your ANSWER is attached in ATTACHMENT hope it helps |
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| 2769. |
11• In which case evaporation of water will be faster; near the sea or far away from the sea? |
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| 2770. |
Arrange the following substances in increasing order of intermolecular force of attraction: Water, Sugar, Oxygen |
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Answer» OXYGEN, WATER, sugar hope it helpss |
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| 2771. |
What acid does ant have?pls reply to this question |
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Answer» Ant STING has a poisonous acid named formic acid . It is also KNOWN as methaonic acid.It is REALLY not poisonous but it pains a lot when injected in skin. |
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| 2775. |
Q. Give classification of polymer with example. |
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Answer» Look around and you will see POLYMERS are everywhere. From the plastic bottle, you carry to school, to the SILICONE rubber tips on your favourite earphones. The nylon and POLYESTER in your sneakers. Not only inanimate objects, many proteins in your body are polymers. So LET US now look into the classification of polymers.....any more |
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| 2776. |
. Discuss the various factors which affect the rate of evaporation.? |
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Answer» More the surface AREA more the speed of EVAPORATION |
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| 2777. |
Define density and give its S.I. Unit. |
| Answer» DENSITY of a SUBSTANCE means Its MAAS per unit volume. How MUCH maas is exerted on per unit of volume. It's S.I. unit is Kg/m3. | |
| 2778. |
Q. A strand of wool burns with the odour of burning hair, while that of cotton burns with a the odour of burning paper. Why? |
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Answer» Because they have DIFFERENT PROPERTIES and CHARACTERISTICS |
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| 2779. |
Why is it necessary to clean a magnesium ribbon before burning? |
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Answer» Otherwise MAGNESIUM ALREADY REACTED with oxygen in AIR so while burning its very diffcult if it is not cleaned by sand paper |
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| 2780. |
Q. Arrange the following in increasing order of tensile strength and explain the reason: wool ,Silk ,nylon ,cotton. |
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Answer» COTTON ,silk, WOOL, wool , NYLON...... hope it HELPED |
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| 2781. |
Complete the equation1. MnO2+HCl gives rise to ......2. Pb(NO3)2 gives rise to.......3. Al+CuSO4 gives rise to .......Write the type of reaction as well |
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Answer» 1. 2MnO2 + 4HCl –––› 2MnCl2 + 2H2O + O2 |
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| 2782. |
Oil and fat containing food items are flushed with nitrogen why??? |
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Answer» Because to avoid the food ITEMS to get rancid. .....that is there is CHANGE in their taste if they come in contact with OXYGEN present in the atmosphere. ....here nitrogen acts as antioxidant .......CHIPS too contain nitrogen so they they remain FRESH for couple of months. ....tq |
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| 2783. |
Which civilization last long for 4500BC |
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Answer» INDUS CIVILIZATION HOPE it will HELP |
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| 2784. |
Is my procedure of writing is correct? |
| Answer» YES CORRECT............EXCEPT some LITTLE MISTAKES..... | |
| 2785. |
What happens when water is added to quicklime? What kind of change is it? |
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Answer» Hey dear, |
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| 2787. |
Burning of a candle is considered as a physical as well as chemical change. Explain. |
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Answer» It is a chemical change, because when the CANDLE is burn, wax is converted into carbon DIOXIDE and WATER VAPOUR..it also produce HEAT and light,so it is difficult to make again the wax from this product. |
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| 2788. |
Why do Diamond a graphic the two forms of carbon evolve different amount of heat |
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Answer» Even diamond CONTAINS more than 90% of carbon where as GRAPHITE is made up of lesser percentage of carbon |
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| 2789. |
Changes involve energy. Explain it. |
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Answer» A change can DEFINE as an alteration in the physically and CHEMICALLY properties of matter due to the effect of some kind energy here ICE get energy from the SURROUNDINGS and get coveted into water mean here energy involves changing the state of ice LIQUID |
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| 2790. |
How will u show that particle motion depends on density of the substance? |
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Answer» To show that motion DEPEND on density of substance. |
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| 2791. |
Chiral compound example |
| Answer» SCISSORS , SHOES ,GOLF CLUBS ETC. are all examples of chiral compound | |
| 2792. |
What is an agar-agar solution |
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Answer» Actually I think it is a solution which is known as POLYMER CONTAINS of SUGAR glactose. |
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| 2793. |
Is it carbon good conductor or bad conductor give reason |
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Answer» Hey!!! |
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| 2794. |
Please tell me the correct answer of this question |
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| 2795. |
Why is wire gauze placed under glass apparatus when they are heated |
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Answer» To spread the temperature evenly and AVOID uneven EXPANSIONS LEADING to the breaking of the glass APPARATUS. |
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| 2797. |
Energy required by one helium atom to produce one mole of helium ions(please tell me the formula to calculate it...... Rest I will do it myself ) |
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Answer» HEY USER here is your answer: 2370Kj HOPE it HELPS you!!!! |
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| 2798. |
Write about the main features greater himalaya |
| Answer» HIMADRI is called GREATER Himalaya .It has asymmetrical folds.And have the lofiest PEAK with the average height of 6000 m.. | |
| 2799. |
Why users account are deactivated |
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Answer» Hey friend, |
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| 2800. |
Why is balancing important? |
| Answer» BALANCING the equations is must important. ......BCOZ ACCORDING to law of CONSERVATION of mass.....matter can neither be created nor destroyed | |