75607 + Interview Questions in Secondary School in Science

1.	Limestone and Maribel both are different forms of calcium carbonate
Answer» Answer: limestone" means any rock formed MOSTLY of CALCIUM carbonate (CaCO3), but to geologists, limestone is only one of SEVERAL types of "carbonate rocks." These rocks are composed of more than 50% carbonate MINERALS, generally the minerals calcite (pure CaCO3) or dolomite (calcium-magnesium carbonate, CaMg[CO3]2) or both. Explanation: MARK ME AS BRAINLIEST

1.

Limestone and Maribel both are different forms of calcium carbonate

Answer»

Answer:

limestone" means any rock formed MOSTLY of CALCIUM carbonate (CaCO3), but to geologists, limestone is only one of SEVERAL types of "carbonate rocks." These rocks are composed of more than 50% carbonate MINERALS, generally the minerals calcite (pure CaCO3) or dolomite (calcium-magnesium carbonate, CaMg[CO3]2) or both.

Explanation:

8.	Hetrogeneous mixture is :O (A) SuspensionO (B) ColloidalОООO (C) True solution(D) Both A & B
Answer» OPTION D...(Both A and B)

32.	8. Why does silver nitratepowder becomes black whenexposed to sunlight?*
Answer» $\\ \\ >☬↓sᴏʟᴜᴛɪᴏɴ ᴛᴏ ʏᴏᴜʀ ǫᴜᴇsᴛɪᴏɴ ↓☬ Silver Nitrate is very sensitive to light. This means, that the chemical will react when exposed to light. So, when this is left exposed to sunlight or any bright light, it will start to hydrolyze. This will result in the formation of black or brown colored silver oxide and nitric acid. \\ ☤ʰᵒᵖᵉ ⁱᵗˢ ʰᵉˡᵖˢ☤ \\ ♚ᴍᴀʀᴋ ᴍᴇ ᴀs ᴛʜᴇ ʙʀᴀɪɴʟɪᴇsᴛ ᴀɴᴅ ғᴏʟʟᴏᴡ ᴍᴇ ♚ \\\\$

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Limestone and Maribel both are different forms of calcium carbonate​

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9.Sodium hydroxide is a------- *1 pointA)weak base(b) weak acid(c) strong base(d) strong acid​

Explain compound and a mixture with asuitable example​

The number of chromosomes in a frog is​

Classify the following into compounds and mixtures. Also identify pure substance from the give listand write them separately. Water, Soil, Sugar, Salt, Sugar solution, Air, Milk, Carbon dioxide, Hydrochloric acid, Brick​

The following substances are classified into compounds and mixtures as follows:

Process by which water enters minute pores in clothes​

1Which of the following is not anexample of physical change.(A)tearing of paper.O (B)cutting of wood.O (C) polishing metal surface.(D) rusting of metals,​

Hetrogeneous mixture is :O (A) SuspensionO (B) ColloidalОООO (C) True solution(D) Both A & B​

Why is rain water acidic at times and not basic ever?

Blinking of eyes, pumping of blood by the heart is(a) voluntary(b) involuntarytell me urgent​

DUUU5.How would you confirm that a colourless liquid given to you ispure water?​

Match the following column A with column BColumn - AColumn - Bi. Cockroacha. proteinsJii, Vitamin Cb. modified stemiii. Growth and repair of tissue C. Scurvyiv. Potatod. omnivoresv. Butter toast + milke. breakfast​

Define plough..; hoe...! cultivation.... ​

Explain some physical properties of metal​

The following are the physical properties of metal :

1.The physical properties make them useful for many purposes. For e.g. Copper is used in making electric wires, gold is used to make jewellery, stainless steel is used to make pots, pans, etc

2.Metals REACT with nonmetals to form ionic bonds. For e.g. Sodium Chloride (NaCl)

3.Metals are a good conductor of electricity which means that they can conduct electricity due to the free moving electrons present in them. Copper is used as WIRING as it is a good conductor of electricity.

4.Metals have high MELTING points and high boiling points as they have strong metallic bonds.

5.All metals are physically LUSTROUS. They have a lustre that makes them shine. Gold is used for making jewellery.

6.Metals are hard, they can’t be broken easily and require a lot of energy and strength to break. Iron is used to make cars, buildings, ships, etc.

7.Metals weigh a lot as they have a high density. Metals are heavy for their size.

8.They don’t have flexibility and have tensile strength. Metals can’t be stretched.

9.Metals are great conductors of heat. That’s why pots, pans, vessels are made of metals.

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What is the value of speed of 10 m/s in Km/hour?​

The indigestible material in the food is known asa. Carbohydrates b. roughage c. fatsd. protein​

1. Wood cellulose is used as raw materials to synthesize2. Is used to make non stick pang3. andare forms of protozoa4. Seeds should not be kept in excessive of moisture before seeing9. Harvesting is manually done by using​

Hope this HELPS you....

The velocity time graph of a ball of powmass 20 g moving along a straightline on a long table is given in Fig.How much force does the tableexert on the ball to bring it to rest?10Kibrish(a) - 0.0004 NO (b) - 0,0002 N0 (c) - 0,04 NO (4) (0,02 M​

9. Mention the positive catalystused in the followingreactions: i) Decomposition ofpotassium chlorate. ii)Ammonia reacts with oxygenproducing nitric oxide gas andwater.​

Which of the following is a sol :O (A) SoilO (B) AirO (C) saltO (D) Milk​

Particle moving with wifort acceleratingvebrity (o=J13a) is wheretravelled bythe bodyitshasthe astonce+ isThenthe accerleration og​

Formula of photosynthesis​

How can we say that metallic oxides are basic innature?​

Bleaching is done by​

Metals have : *1 pointO (A)Malleable propertiesO (B)Metallic lusture natureO (C)Both A&BO (D) Brittle​

Which of the following ingeritance characteristics from one generation to the next?a)geneb) nucleusc) chromosomed) chloroplast​

A. Gene

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Which is the most sesitive organ in our body answer fast ​

Which protein is found in milk?​

The pure substance always have *1 pointO(A)variable Melting point and Boilingpoint.O (B) variable freezing point.O (C) fixed Melting point and Boiling point.O (D) None of these​

8. Why does silver nitratepowder becomes black whenexposed to sunlight?*​

Which vitamin is known as hormone?​

VITAMIN D is actually a HORMONE rather than a vitamin; it is required to ABSORB calcium from the GUT into the bloodstream.

What is the term used for negative acceleration ​

RETARDATION.

) The osmotic pressure of blood is 7.65 atm at 270C. How much glucose should be used per litre to prepare an intravenous injection that has the same osmotic pressure as blood?

Fast When was Amazon Founded Correct ans= brainliest​

Night blindness is caused due to deficiency of ___________ in our food​

Acidity of soil can be reduced by adding(a)formic acid(b)vinegar(c)citric acid (d)slaked acid​

The heavy particles of ores areseparated from light gangue particles bythe process of gravitation is ___________.​

SHORT ANSWER QUESTIONS2. What is pollination?3. Differentiate between self and cross-pollination.4. How does yeast reproduce?1. Name one reproductive and one vegetative part of a plant​

5. PbO is named presently as___O Plumbous oxideO Lead (IV) oxideO Plumbic oxideO Lead (II) oxide​

1. Describe the three layers of the earth.​

Hii

The substance which is used for putting off fire is called_______a) fire extinguisher b) combustible substancesc) inflammable substance sd)none of these​

S BAnswer in one wordThe largest externalorganthat protectsour body from germs &This Corganis made up of cardialmuscles ?sones are mainly made of thismineral ?Full form ofR.B.C and WB.C.The liquid part ofthe blood iscalled !who tell me right ans. I marked as brainliest. plz tell fast​

hope this helps you....

4. When magnesium ribbon isheated, it burns with a_____O Dazzling white flameO Golden yellow flameO Pale blue flameO Brick red flame​

Why do star's twinkle but planets don't give a reason also.​

2. Oxide ion is a _____O Monovalent radicalO Divalent radicalO Trivalent radicalO Tetravalent radical.​

Give one function each of. Mitochondria. Golgi body. Plasma memb. Lysosome. Endoplasmic reticulum​

Limestone and Maribel both are different forms of calcium carbonate

9.Sodium hydroxide is a------- *1 pointA)weak base(b) weak acid(c) strong base(d) strong acid

Explain compound and a mixture with asuitable example

The number of chromosomes in a frog is

Classify the following into compounds and mixtures. Also identify pure substance from the give listand write them separately. Water, Soil, Sugar, Salt, Sugar solution, Air, Milk, Carbon dioxide, Hydrochloric acid, Brick

Process by which water enters minute pores in clothes

1Which of the following is not anexample of physical change.(A)tearing of paper.O (B)cutting of wood.O (C) polishing metal surface.(D) rusting of metals,

Hetrogeneous mixture is :O (A) SuspensionO (B) ColloidalОООO (C) True solution(D) Both A & B

Blinking of eyes, pumping of blood by the heart is(a) voluntary(b) involuntarytell me urgent

DUUU5.How would you confirm that a colourless liquid given to you ispure water?

Match the following column A with column BColumn - AColumn - Bi. Cockroacha. proteinsJii, Vitamin Cb. modified stemiii. Growth and repair of tissue C. Scurvyiv. Potatod. omnivoresv. Butter toast + milke. breakfast

Define plough..; hoe...! cultivation....

Explain some physical properties of metal

What is the value of speed of 10 m/s in Km/hour?

The indigestible material in the food is known asa. Carbohydrates b. roughage c. fatsd. protein

1. Wood cellulose is used as raw materials to synthesize2. Is used to make non stick pang3. andare forms of protozoa4. Seeds should not be kept in excessive of moisture before seeing9. Harvesting is manually done by using

The velocity time graph of a ball of powmass 20 g moving along a straightline on a long table is given in Fig.How much force does the tableexert on the ball to bring it to rest?10Kibrish(a) - 0.0004 NO (b) - 0,0002 N0 (c) - 0,04 NO (4) (0,02 M

9. Mention the positive catalystused in the followingreactions: i) Decomposition ofpotassium chlorate. ii)Ammonia reacts with oxygenproducing nitric oxide gas andwater.

Which of the following is a sol :O (A) SoilO (B) AirO (C) saltO (D) Milk

Particle moving with wifort acceleratingvebrity (o=J13a) is wheretravelled bythe bodyitshasthe astonce+ isThenthe accerleration og

Formula of photosynthesis

How can we say that metallic oxides are basic innature?

Bleaching is done by

Metals have : *1 pointO (A)Malleable propertiesO (B)Metallic lusture natureO (C)Both A&BO (D) Brittle

Which of the following ingeritance characteristics from one generation to the next?a)geneb) nucleusc) chromosomed) chloroplast

Which is the most sesitive organ in our body answer fast

Which protein is found in milk?

The pure substance always have *1 pointO(A)variable Melting point and Boilingpoint.O (B) variable freezing point.O (C) fixed Melting point and Boiling point.O (D) None of these

8. Why does silver nitratepowder becomes black whenexposed to sunlight?*

Which vitamin is known as hormone?

What is the term used for negative acceleration

$\text{[math]}$ RETARDATION.

Fast When was Amazon Founded Correct ans= brainliest

Night blindness is caused due to deficiency of ___________ in our food

Acidity of soil can be reduced by adding(a)formic acid(b)vinegar(c)citric acid (d)slaked acid

The heavy particles of ores areseparated from light gangue particles bythe process of gravitation is ___________.

SHORT ANSWER QUESTIONS2. What is pollination?3. Differentiate between self and cross-pollination.4. How does yeast reproduce?1. Name one reproductive and one vegetative part of a plant

5. PbO is named presently as___O Plumbous oxideO Lead (IV) oxideO Plumbic oxideO Lead (II) oxide

1. Describe the three layers of the earth.

The substance which is used for putting off fire is called_______a) fire extinguisher b) combustible substancesc) inflammable substance sd)none of these

S BAnswer in one wordThe largest externalorganthat protectsour body from germs &This Corganis made up of cardialmuscles ?sones are mainly made of thismineral ?Full form ofR.B.C and WB.C.The liquid part ofthe blood iscalled !who tell me right ans. I marked as brainliest. plz tell fast

4. When magnesium ribbon isheated, it burns with a_____O Dazzling white flameO Golden yellow flameO Pale blue flameO Brick red flame

Why do star's twinkle but planets don't give a reason also.

2. Oxide ion is a _____O Monovalent radicalO Divalent radicalO Trivalent radicalO Tetravalent radical.

Give one function each of. Mitochondria. Golgi body. Plasma memb. Lysosome. Endoplasmic reticulum