A student sets up an expirment on photoysthesis as folows : He takes soda water in a glass tumbler and adds chloroplyll into the contents and keeps th

A student sets up an expirment on photoysthesis as folows : He takes soda water in a glass tumbler and adds chloroplyll into the contents and keeps th
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A student sets up an expirment on photoysthesis as folows : He takes soda water in a ... because intact chloroplasts are needed for the process.
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Take a 250 mL beaker/glass tumbler. Fill half of it with water. Now carefully cut a small piece of sodium metal. Dry it using filter paper and wrap it in a small piece of cotton. Put the sodium piece wrapped in cotton into the beaker. Observe carefully. -Science

Description : Take a 250 mL beaker/glass tumbler. Fill half of it with water. Now carefully cut a small piece of sodium metal. Dry it using filter paper and wrap it in a small piece of cotton. Put the sodium piece wrapped in cotton into the beaker. Observe carefully. -Science

Last Answer : On touching the beaker, it was felt hot. The solution turns the red litmus paper to blue which shows it is basic in nature. Blue litmus paper do not show any colour change with the solution.

Why does a thick glass tumbler crack when boiling hot water is poured into it?

Description : Why does a thick glass tumbler crack when boiling hot water is poured into it?

Last Answer : Matter expands when it is heated. When you pour boiling waterinto a glass the bottom becomes heated and expands while the restof the glass is at a different temperature. As the ... expand evenly, preventing that stress from happening. Slow andeven temperature changes will prevent the breaking.

When hot liquid is poured into a thick glass tumbler, it cracks because glass – (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion

Description : When hot liquid is poured into a thick glass tumbler, it cracks because glass – (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion

Last Answer : (1) is a bad conductor of heat so only inner surface expands Explanation: When hot liquid is poured into a thick glass tumbler, it cracks because glass is a bad conductor of heat so only inner surface expands.

When hot liquid is poured into a thick glass tumbler, it cracks because glass : (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion

Description : When hot liquid is poured into a thick glass tumbler, it cracks because glass : (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion

Last Answer :  is a bad conductor of heat so only inner surface expands 

When hot-water is sprinkled on a hotter glass tumbler, it breaks because – (1) glass suddenly expands (2) glass suddenly contracts (3) water evaporates (4) glass reacts chemically with water

Description : When hot-water is sprinkled on a hotter glass tumbler, it breaks because – (1) glass suddenly expands (2) glass suddenly contracts (3) water evaporates (4) glass reacts chemically with water

Last Answer : (2) glass suddenly contracts Explanation: If the poured liquid is relatively hotter or colder in comparison to the tumbler, it will break. When hot water is poured into a tumbler there is an uneven increase in the thermal expansion of the walls of the vessel.

When hot-water is sprinkled on a hotter glass tumbler, it breaks because (1) glass suddenly expands (2) glass suddenly contracts (3) water evaporates (4) glass reacts chemically with water

Description : When hot-water is sprinkled on a hotter glass tumbler, it breaks because (1) glass suddenly expands (2) glass suddenly contracts (3) water evaporates (4) glass reacts chemically with water

Last Answer : glass suddenly contracts

Why does an ordinary glass tumbler crack when very hot tea or milk is poured in it?

Description : Why does an ordinary glass tumbler crack when very hot tea or milk is poured in it?

Last Answer : Answer: When a hot liquid is poured into a tumbler, the inner layer of the tumbler gets heated, it expands before the outer layer and an unequal expansion of both layers causes the tumbler to crack.

What was the original generation of pea plants in mendels expirment called?

Description : What was the original generation of pea plants in mendels expirment called?

Last Answer : Need answer

Point out the wrong statement. a) AWS S3 essentially lets you create your own cloud storage b) AWS created “Availability Zones” within regions, which are sets of systems that are isolated from one another c) Amazon Web Services (AWS) adds redundancy to its IaaS systems by allowing EC2 virtual machine instances d) None of the mentioned

Description : Point out the wrong statement. a) AWS S3 essentially lets you create your own cloud storage b) AWS created Availability Zones within regions, which are sets of systems that are isolated from ... adds redundancy to its IaaS systems by allowing EC2 virtual machine instances d) None of the mentioned

Last Answer : None of the mentioned

When A student measures the speed of a rolling ball three times. She adds the measurements and divides by 3. What quantity did the student calculate?

Description : When A student measures the speed of a rolling ball three times. She adds the measurements and divides by 3. What quantity did the student calculate?

Last Answer : Average measured speed.

There are two cliffs. They are each attached by a suspension bridge that takes 5 minutes to walk across, and is the only way to get to the other side. No one is allowed to cross the bridge unless authorized. There is a guard on the other side that takes a nap every 5 minutes, then keeps watch for 5 minutes, takes a nap for 5 minutes, and so on. Let's say you don't have authorization. How would you get across (Remember, he wakes up EXACTLY after 5 minutes, meaning if you go on the bridge the second he takes a nap, and you cross the bridge, he'll wake up exactly when you reach the other side, and send you back)? -Riddles

Description : There are two cliffs. They are each attached by a suspension bridge that takes 5 minutes to walk across, and is the only way to get to the other side. No one is allowed to cross the bridge unless ... the bridge, he'll wake up exactly when you reach the other side, and send you back)? -Riddles

Last Answer : You can't go as he is awake, he'll see you, but go when he doesn't see you. Then, turn back as he is waking up, pretending to go to the side you came from. Then, he'll figure you are unauthorized to set foot on the bridge, and send you to the side you want to get to.

A pyrex tumbler does not crack when hot water is poured into it because pyrex (a) is a strong material (b) does not expand much on heating (c) is a good conductor of heat (d) expands equally from inside and outside

Description : A pyrex tumbler does not crack when hot water is poured into it because pyrex (a) is a strong material (b) does not expand much on heating (c) is a good conductor of heat (d) expands equally from inside and outside

Last Answer : Ans:(b)

A student coming out cell fractionation of a tissue and forgot to label his tubes. The contents of one tube when studied showed organelles bounded by

Description : A student coming out cell fractionation of a tissue and forgot to label his tubes. The contents of one tube when studied showed organelles bounded by

Last Answer : A student coming out cell fractionation of a tissue and forgot to label his tubes. The contents of ... . SER B. Chloroplast C. Lysosome D. Perosisome

What type of cup will keep water cold the longest Yeti Solo cup or Rambler Tumbler?

Description : What type of cup will keep water cold the longest Yeti Solo cup or Rambler Tumbler?

Last Answer : This is a quetion that i need an answer for. It is for a sciencefair project.

Why does moisture gather outside a tumbler containing cold water?

Description : Why does moisture gather outside a tumbler containing cold water?

Last Answer : Answer: The water vapour in the air condenses on cooling and appears as droplets of water.

__________ mixer is used for devulcanisation of rubber scrap & making water dispersion & rubber solution.(A) Tumbler (B) Banbury (C) Muller (D) Ribbon blender

Description : __________ mixer is used for devulcanisation of rubber scrap & making water dispersion & rubber solution. (A) Tumbler (B) Banbury (C) Muller (D) Ribbon blender

Last Answer : (B) Banbury

On placing an inverted tumbler over a burning candle, the flame extinguishes after some – time . This is because of non –availability of a) oxygen b)water vapour c)carbon dioxide d)wax

Description : On placing an inverted tumbler over a burning candle, the flame extinguishes after some – time . This is because of non –availability of a) oxygen b)water vapour c)carbon dioxide d)wax

Last Answer : a) oxygen

I have Tumbler blog.. using a Cargo Theme, does any one know how to change your text title to an image and add on facebook/twitter icons.. Thanks?

Description : I have Tumbler blog.. using a Cargo Theme, does any one know how to change your text title to an image and add on facebook/twitter icons.. Thanks?

Last Answer : Could you post a link to your blog and the image you want to use?

Where can I find a coffee tumbler like this?

Description : Where can I find a coffee tumbler like this?

Last Answer : Don’t quite get what your asking. /edit Ah, now I get it.

A lighted candle gets extinguished when covered with a tumbler. Why? -Do You Know?

Description : A lighted candle gets extinguished when covered with a tumbler. Why? -Do You Know?

Last Answer : answer:

Hot coffee is poured simultaneously in four metallic tumblers painted outside with different types of paints. After some time, the coffee will be found coldest in the tumbler painted (a) rough white (b) shining white (c) rough black (d) shining black

Description : Hot coffee is poured simultaneously in four metallic tumblers painted outside with different types of paints. After some time, the coffee will be found coldest in the tumbler painted (a) rough white (b) shining white (c) rough black (d) shining black

Last Answer : Ans:(c)

A lighted candle gets extinguished when covered with a tumbler. Why?

Description : A lighted candle gets extinguished when covered with a tumbler. Why?

Last Answer : Because of inadequate supply of air

While performing an experiment to study the dependence of current on the potential difference across two ends of the resistor, a student keeps the circuit closed for a long time to measure the current and potential difference. State how the resistance of the resistor will be affected?

Description : While performing an experiment to study the dependence of current on the potential difference across two ends of the resistor, a student keeps the circuit closed for a long time to measure the current and potential difference. State how the resistance of the resistor will be affected?

Last Answer : Answer. When the circuit is closed for a long time, the flow of current will be in excess which causes unwanted heating in the resistor and changes the value of resistance.

Given the following statements : S1 : The subgraph-isomorphism problem takes two graphs G1 and G2 and asks whether G1 is a subgraph of G2. S2 : The set-partition problem takes as input a set S of numbers and asks whether the numbers can be partitioned into two sets A Image Which of the following is true ? (A) S1 is NP problem and S2 is P problem. (B) S1 is NP problem and S2 is NP problem. (C) S1 is P problem and S2 is P problem. (D) S1 is P problem and S2 is NP problem.

Description : Given the following statements :  S1 : The subgraph-isomorphism problem takes two graphs G1 and G2 and asks whether G1 is a subgraph of G2.  S2 : The set-partition problem takes as input a set S of numbers and ... S1 is P problem and S2 is P problem. (D) S1 is P problem and S2 is NP problem.

Last Answer : (B) S1 is NP problem and S2 is NP problem.

In comparison, which is one of the steps of teaching? Options: A) A student is asked to compare two teachers. B) A student is asked to compare two sets of facts. C) A student is asked to compare present with the past. D) A student is asked to compare two different topics/lessons.

Description : In comparison, which is one of the steps of teaching? Options: A) A student is asked to compare two teachers. B) A student is asked to compare two sets of facts. C) A student is asked to compare present with the past. D) A student is asked to compare two different topics/lessons.

Last Answer : B) A student is asked to compare two sets of facts. 

If a man cando a piece of work in 8 hours and a women can do the same work in 12 hours, then find the time it takes for 2 men and 3 women to finish th

Description : If a man cando a piece of work in 8 hours and a women can do the same work in 12 hours, then find the time it takes for 2 men and 3 women to finish th

Last Answer : If a man cando a piece of work in 8 hours and a women can do the same work in 12 hours, then ... takes for 2 men and 3 women to finish the same work.

Fig shows a small air bubble inside a glass sphere `(mu = 1.5)` of radius 10 cm. the bubble is 4.0 cm below the surface and is viewed normally from th

Description : Fig shows a small air bubble inside a glass sphere `(mu = 1.5)` of radius 10 cm. the bubble is 4.0 cm below the surface and is viewed normally from th

Last Answer : Fig shows a small air bubble inside a glass sphere `(mu = 1.5)` of radius 10 cm. the ... from the outside. Find the apparent depth of the bubble.

A man buys milk at Rs. 2.40 per litre. He adds one-third water to it and sells the mixture at Rs. 2.88 per litre. Find his profit percentage. (Assume water is free). a) 21% b) 30% c) 40% d) 50% e) 60%

Description : A man buys milk at Rs. 2.40 per litre. He adds one-third water to it and sells the mixture at Rs. 2.88 per litre. Find his profit percentage. (Assume water is free). a) 21% b) 30% c) 40% d) 50% e) 60%

Last Answer : Let say he purchases 3 litres of milk whose cost is Rs. 7.20 He adds 1 litre of water and the mixture of 4 litres is sold at Rs 2.88 × 4 = Rs11.52 Profit percentage = (11.52 – 7.20) × 100.0/7.20 = 4.32 × 100.0/7.2 = 60% Answer: e)

A milkman mixes 20 litres of water with 80 litres of milk. After selling one-fourth of this mixture, he adds water to replenish the quantity he has sold, what is the current proportion of water to milk? a) 1 : 3 b) 2 : 3 c) 3 : 4 d) 4 : 3 e) None of these

Description : A milkman mixes 20 litres of water with 80 litres of milk. After selling one-fourth of this mixture, he adds water to replenish the quantity he has sold, what is the current proportion of water to milk? a) 1 : 3 b) 2 : 3 c) 3 : 4 d) 4 : 3 e) None of these

Last Answer : Milk remaining after selling 1/4 of mixture = 80 ×(1- 1/4)=60 litres =>water =100-60 = 40 litres => Required ratio = 40 : 60 =2 : 3 Answer: b)

I am an object, I takes pill at first, keeps your head safe, and becomes low at last. What am I? -Riddles

Description : I am an object, I takes pill at first, keeps your head safe, and becomes low at last. What am I? -Riddles

Last Answer : A pillow.

Which of the following is NOT a characteristic of glass ionomer cements? a. strong in compression but weaker in tension True b. the matrix is formed during the initial set of the cement c. sets via an ion exchange reaction that continues for at least 24 hours true d. suitable for use as a core build up material in anterior teeth

Description : Which of the following is NOT a characteristic of glass ionomer cements? a. strong in compression but weaker in tension True b. the matrix is formed during the initial set of the cement c. sets via ... for at least 24 hours true d. suitable for use as a core build up material in anterior teeth

Last Answer : d. suitable for use as a core build up material in anterior teeth

Are glass kitchen canister sets harder to clean than stainless steel kitchen canister sets?

Description : Are glass kitchen canister sets harder to clean than stainless steel kitchen canister sets?

Last Answer : There shouldn't be anything more difficult about cleaning glass canisters. In fact, it's likely to be easier, as glass is difficult to scratch, and glass is nonreactive, so most cleaners will ... remember to clean it with dishwashing liquid or another cleaner that is safe for items that hold food.

lass Ionomer Cement sets because of,** A. Acid-Base reaction B. Addition polymerisation reaction C. Growth of glass crystals D. Slip plane locking E. Solvent evaporation

Description : lass Ionomer Cement sets because of,** A. Acid-Base reaction B. Addition polymerisation reaction C. Growth of glass crystals D. Slip plane locking E. Solvent evaporation

Last Answer : A. Acid-Base reaction

RCA's development of its next year's model television sets with smoked -glass control panel covers and other visual changes would be classified as a __________ modification. A)functional B)quality C)product extension D)brand E)style

Description : RCA's development of its next year's model television sets with smoked-glass control panel covers and other visual changes would be classified as a __________ modification. A)functional B)quality C)product extension D)brand E)style

Last Answer : E)style

When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Last Answer : (3) Carbon dioxide Explanation: When baking soda and lemon juice are added together, the reaction of the two is an acid-based reaction because it involves an acid (citric acid in the lemon juice) ... , more commonly known as baking soda). Carbon dioxide, a gas, is produced by the reaction.

When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them 

Last Answer : Carbon dioxide

Which of the following is used for removing air bubbles from glass during its manufacture? (1) Fledspar (2) Arsenic oxide (3) Potassium Carbonate (4) Soda Ash

Description : Which of the following is used for removing air bubbles from glass during its manufacture? (1) Fledspar (2) Arsenic oxide (3) Potassium Carbonate (4) Soda Ash

Last Answer : (2) Arsenic oxide

Raw materials used for the manufacture of glass are – (1) sand, soda, limestone (2) sand, charcoal, soda (3) limestone, charcoal, sulphur (4) sand, sulphur, soda

Description : Raw materials used for the manufacture of glass are – (1) sand, soda, limestone (2) sand, charcoal, soda (3) limestone, charcoal, sulphur (4) sand, sulphur, soda

Last Answer : (1) sand, soda, limestone Explanation: Quartz sand (silica) is the main raw material in commercial glass production. While fused quartz (primarily composed of SiO2) is used for some special ... over 1200 degree C (2192 degree F). Normally, other substances are added to simplify processing.

Which one of the following types of glass can cut off ultraviolet rays? (1) Soda glass (2) Pyrex glass (3) Jena glass (4) Crookes glass

Description : Which one of the following types of glass can cut off ultraviolet rays? (1) Soda glass (2) Pyrex glass (3) Jena glass (4) Crookes glass

Last Answer : (4) Crookes glass Explanation: In this glass mainly cerium oxide (CiO2) is present which sharply absorbs the ultraviolet rays from the sunlight so utilized in making lenses of eye glasses.

The inexpensive and commonly used variety of glass is called soda glass. It is called so because?

Description : The inexpensive and commonly used variety of glass is called soda glass. It is called so because?

Last Answer : is made using soda(sodium carbonate)

Common house hold glass (i.e., soda-lime glass) is a/an __________ material. (A) Fully crystalline (B) Partly crystalline (C) Amorphous

Description : Common house hold glass (i.e., soda-lime glass) is a/an __________ material. (A) Fully crystalline (B) Partly crystalline (C) Amorphous

Last Answer : (B) Partly crystalline

Caustic soda is transported in __________ lined containers. (A) Glass (B) Nickel (C) Neoprene (D) Either (B) or (C)

Description : Caustic soda is transported in __________ lined containers. (A) Glass (B) Nickel (C) Neoprene (D) Either (B) or (C)

Last Answer : (D) Either (B) or (C)

What happens when: a) When a mixture of sodium acetate and soda lime is heated in a hard glass test tube.

Description : What happens when: a) When a mixture of sodium acetate and soda lime is heated in a hard glass test tube.

Last Answer : Methane gas is evolved. CH 3 COONA + NaOH CaO Na 2 CO 3 + CH 4 b) Methane is burnt in air or oxygen or methane undergoes complete combustion. It forms carbon dioxide and water. CO 2 + H ... ultraviolet light (sunlight). Organic product chloromethane is formed CH 4 + Cl 2 UV CH 3 Cl + HCl

Soda lime glass is

Description : Soda lime glass is

Last Answer : colourless.

The gaseous product released during the manufacture of soda glass is

Description : The gaseous product released during the manufacture of soda glass is

Last Answer : carbon dioxide.

The major constituents of glass are (A) Lime, clay and soda ash (B) Sand, lime and soda ash (C) Silica, alumina and clay (D) Silica, alumina and soda ash

Description : The major constituents of glass are (A) Lime, clay and soda ash (B) Sand, lime and soda ash (C) Silica, alumina and clay (D) Silica, alumina and soda ash

Last Answer : (B) Sand, lime and soda ash

Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance. (A) Flint (B) Soda (C) Pyrex (D) Potash

Description : Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance. (A) Flint (B) Soda (C) Pyrex (D) Potash

Last Answer : (C) Pyrex

Dense soda ash used in the manufacture of glass, is chemically represented by (A) Na2CO3 (B) Na2CO3 .10H2O (C) Na2CO3 .H2O (D) Na2HCO3

Description : Dense soda ash used in the manufacture of glass, is chemically represented by (A) Na2CO3 (B) Na2CO3 .10H2O (C) Na2CO3 .H2O (D) Na2HCO3

Last Answer : (C) Na2CO3 .H2O

Type of glass used in optical work is the __________ glass. (A) Soda-lime (B) Fibre (C) Lead (D) Borosilicate

Description : Type of glass used in optical work is the __________ glass. (A) Soda-lime (B) Fibre (C) Lead (D) Borosilicate

Last Answer : (C) Lead

Which of the following is not a raw material used for the manufacture of ordinary glass? (A) Iron oxide (B) Soda ash (C) Limestone (D) Silica

Description : Which of the following is not a raw material used for the manufacture of ordinary glass? (A) Iron oxide (B) Soda ash (C) Limestone (D) Silica

Last Answer : (A) Iron oxide