75607 + Interview Questions in Secondary School in Science

1.	Explain why the indicator changes colour during the neutralizing reaction
Answer» Answer: An indicator shows whether an SUBSTANCE is a base or an acid but during a neutralisation reaction the colour change occurs due to the solution be neutral (i.e pH is 7). Explanation: INDICATORS are substances whose solutions change COLOR due to changes in pH. These are called acid-base indicators. They are usually weak acids or bases, but their conjugate base or acid FORMS have different colors due to differences in their absorption spectra.

1.

Explain why the indicator changes colour during the neutralizing reaction

Answer»

Answer:

An indicator shows whether an SUBSTANCE is a base or an acid but during a neutralisation reaction the colour change occurs due to the solution be neutral (i.e pH is 7).

Explanation:

INDICATORS are substances whose solutions change COLOR due to changes in pH. These are called acid-base indicators. They are usually weak acids or bases, but their conjugate base or acid FORMS have different colors due to differences in their absorption spectra.

19.	What do you understand about two conversion of mass
Answer» The law of conservation of mass STATES that mass in an isolated system is NEITHER created nor destroyed by CHEMICAL reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the REACTANTS.

37.	Which balance is required by the body when it is moving
Answer» Balance in biomechanics, is an ability to MAINTAIN the line of gravity (vertical line from CENTRE of mass) of a body within the base of support with minimal postural sway. Sway is the horizontal movement of the centre of gravity even when a person is standing STILL.

45.	if a car start from a rest and accelerated for 10 second at the time of 0.5 m/S2 it's final velocity will be
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Explain why the indicator changes colour during the neutralizing reaction

Find out the uses of fungi to plants and animal?

Name the mode of asexual reproduction in Spirogyra

It's better not to use plastic if u aggery explain it

Why cannot we breathe and swallow at the same time?

Name the colours in the spectrum that cannot be seen with the naked eye.

Riyox abhorrent kiya kya h udharan sahit likhia

Force exerted by the Earth...........

प्रश्न.14 पुष्प के किन्हीं 4 अंगों के नाम लिखिए

Immunity against tuberculosis is provided by which of the following vaccines 1)DPT 2)Tetarius Taxoid 3)BCG 4)Booster dose

The diameter of the earth at its equator is called

Name the following1 The food iteme Drepared from Jawanichopatipur2) A person whose occupation is to trade-oldclothes in exchange fan now utensils2) Two covities in the human body tharicine abch

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Metals are _ conductor of heat where as _ are bad conductor of heat

- which observation in the above experiment demons-stated that an atom has a lot of empty space within it

Which fruit is most suitable for jelly Making ?

Sudden change in condition of atmosphere is called ____

What do you understand about two conversion of mass

.Charles applies an effort of you on a simple machinethrough a distance of 1.5m and is able to push to a loud of100Ndistance of 30 cm. find the infect, outputand efficiency of a machine

Who gave cell concept ?

अ. जेव्हा एखादी वस्तू मुक्तपणे जमिनीवर पडतेतेव्हा गतीचे त्वरण एकसमान असते.

plants found in which of the following habitat have poorly developed root system 1)Aquatic 2)terrestrial 3)xerophytes 4)amphibious

Antibiotics kills _____ disease

Write one difference and similarity between amoeba?

Write one difference and similarity between amoeba? please help me

Plss anyone tell me the answer this question you have to tell only 1 and 5 please

Apply the law of constant proportion to calculate the mass of oxygen that will be used for compaction of 5 gram of H2 gas

Belongs to group of amphibian plants. *ThallophytaPteridophytaCryptogammeNone of these

Pollution caused by coal and petroleum

Which of the following enzyme act on carbohydrates?1)pepsin2)Ptyalin3)Trypsin4)chymotrypsin

WorkshotNome: frizuanwhey there is no effect on the brightness of the bulb byincreasing the number of cell in parllel circuit

which of the following gases is essential for burning 1)oxygen 2)nitrogen 3) water vapour 4)carbon dioxide

किया What is atmospheric pressure?

1 The pair of salivary glands present belowthe tongue1)Sublingual2)Parotid3)Submaxillary4)All of the above

Which balance is required by the body when it is moving

Solve this one ..........................

Tick the odd one out and give reason also :-Hydraulic disc brakesHydraulic pressureAneroid barometerHydraulic car jack

Explain meristematic tissue in plants and connective tissues in animals.

1. What colour change takes place in iodine if it is added to a food itemrich in starch?

From which layer of atmosphere plants get carbon dioxide?

The average heart rate of adult human is

if a car start from a rest and accelerated for 10 second at the time of 0.5 m/S2 it's final velocity will be

Explain the vibration of vocal cords class 8 ncert science

The unit of power is 1)watt per second 2)joule 3)kilo joule 4)watt

Adaptation in terrestrial organisms

Complete the following activity.N7Na11С117

Ans plz I will mark u as a brainlist