What are the alkaline substances ?

What are the alkaline substances ?
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1 Answer

Answer :

Lime ( CaO), Caustic Soda ( NaOH), Lime Water [ Ca (OH) 2], Toothpaste , Antacid [ Mg (OH) 2] or [Al (OH) 3], Copper Raw Soda ( NaCO3)
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Related questions

When talking about the periodic table, what are the trends of precipitates as you move down the column of alkaline earth metals?

Description : When talking about the periodic table, what are the trends of precipitates as you move down the column of alkaline earth metals?

Last Answer : Homework, eh? :)

What is alkaline acid ?

Description : What is alkaline acid ?

Last Answer : The acid formed as a result of the connection of a proton with a base is called the corresponding acid of the base .

What is Alkaline ?

Description : What is Alkaline ?

Last Answer : The radical formed when an H atom is removed from an alkene molecule is called an alkyne radical. Its common signal ( CnH¬2n + 1) . It is expressed by R.

What is Alkaline ?

Description : What is Alkaline ?

Last Answer : The part that remains after removing a hydrogen atom from an alkene molecule is called alkaline.

Gypsum is used for improvement of: (1) Alkaline soils (2) Saline soils (3) (3) Podsols (4) (4) Acidic soils

Description : Gypsum is used for improvement of: (1) Alkaline soils (2) Saline soils (3) (3) Podsols (4) (4) Acidic soils

Last Answer : (2) Saline soils Explanatioqn: Gypsum is calcium sulfate which is essential to the sustainability of most irrigated soils. Irrigated land eventually leads to sodieity and salinity unless extreme care is ... improves sodic (saline) soils by removing sodium from the soil and replacing it with calcium.

Catalytic converters are generally made from (1) Alkaline metals (2) Hydrogen (3) Transition metals (4) Carbon

Description : Catalytic converters are generally made from (1) Alkaline metals (2) Hydrogen (3) Transition metals (4) Carbon

Last Answer : (3) Transition metals Explanation: Transition metals are used directly as catalysts in the anti-pollution catalytic converters in car exhausts. For example, expensive transition metals such as ... nitrogen monoxide, which are converted to the non-polluting gases nitrogen and carbon dioxide.

Diamond is the form of carbon that is - (1) Crystalline (2) Amorphous (3) Chemical (4) Alkaline

Description : Diamond is the form of carbon that is - (1) Crystalline (2) Amorphous (3) Chemical (4) Alkaline

Last Answer : (1) Crystalline Explanation: Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic.

Bee sting contains - (1) An acidic liquid (2) asalt solution (3) an alkaline liquid (4) acorrosive liquid

Description : Bee sting contains - (1) An acidic liquid (2) asalt solution (3) an alkaline liquid (4) acorrosive liquid

Last Answer : (1) An acidic liquid Explanation: A bee sting is a sting from a bee (honey bee, bumblebee, sweat bee, etc.). Bee stings are acidic. So its effects can be neutralized with bicarbonate of soda or alkali and this reaction reduces the pain.

Drinking soda is – (1) Alkaline (2) Acidic (3) Neutral (4) Oxidant

Description : Drinking soda is – (1) Alkaline (2) Acidic (3) Neutral (4) Oxidant

Last Answer : (2) Acidic Explanation: A soft drink, coke, soda pop, fizzy drink, tonic, .seltzer, mineral, sparkling water or carbonated beverage) is a beverage that typically contains water (often, but not ... other ingredients. Soft drinks are called "soft" in contrast to "hard drinks" (alcoholic beverages).

How does the of Hydration Enthalpy of alkaline earth metals vary & compare it with alkali metals

Description : How does the of Hydration Enthalpy of alkaline earth metals vary & compare it with alkali metals

Last Answer : Ans The hydration enthalpies of alkaline earth metal ions decrease with increase in ionic size down the group. Be2+> Mg2+ > Ca2+ > Sr2+ > Ba2+ The hydration enthalpies of alkaline earth metal ions ... MgCl2 and CaCl2 exist as MgCl2.6H2O and CaCl2· 6H2O while NaCl and KCl do not form such hydrates.

How does the of Ionization Enthalpy of alkaline earth metals vary in comparison to alkali metals

Description : How does the of Ionization Enthalpy of alkaline earth metals vary in comparison to alkali metals

Last Answer : Ans The alkaline earth metals have low ionization enthalpies due to fairly large size of the atoms. Since the atomic size increases down the group, their ionization enthalpy decreases The first ... enthalpies of the alkaline earth metals are smaller than those of the corresponding alkali metals.

How does the atomic and Ionic Radii of alkaline earth metals vary in comparison to alkali metals

Description : How does the atomic and Ionic Radii of alkaline earth metals vary in comparison to alkali metals

Last Answer : Ans The atomic and ionic radii of the alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods. This is due to the increased nuclear charge in these elements. Within the group, the atomic and ionic radii increase with increase in atomic number.

Give reason .the compounds of alkaline earth metals are less ionic than alkali metals

Description : Give reason .the compounds of alkaline earth metals are less ionic than alkali metals

Last Answer : Ans This is due to increased nuclear charge and smaller size.

What happens when nitrates of alkaline earth metal is heated?

Description : What happens when nitrates of alkaline earth metal is heated?

Last Answer : Ans The nitrates are made by dissolution of the carbonates in dilute nitric acid. Magnesium nitrate crystallises with six molecules of water, whereas barium nitrate crystallises as the anhydrous salt. ... hydration enthalpy. All of them decompose on heating to give the oxide like lithium nitrate.

Name the alkaline earth metal used in radio therapy.

Description : Name the alkaline earth metal used in radio therapy.

Last Answer : Ans : Radium salts are used in radiotherapy, for example, in the treatment of cancer.

State as to why: (a) A solution of Na2CO3 is alkaline? (b)alkali metals are prepared by electrolysis of their fused chlorides ? (c)sodium is found to be more useful than potassium ?

Description : State as to why: (a) A solution of Na2CO3 is alkaline? (b)alkali metals are prepared by electrolysis of their fused chlorides ? (c)sodium is found to be more useful than potassium ?

Last Answer : Ans. (a) It undergoes hydrolysis to produce a strong base NaOH . (b) When the aq. Solution of any alkali metal is subjected to electrolysis ,H2 instead of the alkali metal is produced at the ... of sugars and amino acids into the cells. Thus, sodium is found to be more useful than potassium.

Uric acid on oxidation with alkaline KMnO4 forms : (a) Urea (b) Barbituric acid (c) Allantoin (d) Caffeine

Description : Uric acid on oxidation with alkaline KMnO4 forms : (a) Urea (b) Barbituric acid (c) Allantoin (d) Caffeine

Last Answer : Allantoin

Alkaline hydrolysis of oils (or fats) is called : (a) Saponification (b) Fermentation (c) Diazotization (d) Rancidification

Description : Alkaline hydrolysis of oils (or fats) is called : (a) Saponification (b) Fermentation (c) Diazotization (d) Rancidification

Last Answer : Saponification

Organic compound (A), C4H8O, does not react with sodium or PCl5. However, it reduces an alkaline solution of a copper (II) salt on heating. Compound (A) could be (a) an aldehyde (b) a primary alcohol (c) a ketone (d) a secondary alcohol

Description : Organic compound (A), C4H8O, does not react with sodium or PCl5. However, it reduces an alkaline solution of a copper (II) salt on heating. Compound (A) could be (a) an aldehyde (b) a primary alcohol (c) a ketone (d) a secondary alcohol

Last Answer : an aldehyde

Which of the following reagents will react with propene? (a) Hot alkaline KMnO4 (b) Sodium metal (c) Cold dilute HNO3 (d) LiAlH4

Description : Which of the following reagents will react with propene? (a) Hot alkaline KMnO4 (b) Sodium metal (c) Cold dilute HNO3 (d) LiAlH4

Last Answer : Hot alkaline KMnO4

70. Which one of the following statements is false in respect of viability of mammalian sperm ? (1) Sperms must be concentrated in a thick suspension (2) Sperm is viable for only up to 24 hours (3) Survival of sperm depends on the pH of the medium and is more active in alkaline medium (4) Viability of sperm is determined by its motility

Description : 70. Which one of the following statements is false in respect of viability of mammalian sperm ? (1) Sperms must be concentrated in a thick suspension (2) Sperm is viable for only up to 24 hours ... the medium and is more active in alkaline medium (4) Viability of sperm is determined by its motility

Last Answer : Sperm is viable for only up to 24 hours

What are the uses of alkaline earth metals ?

Description : What are the uses of alkaline earth metals ?

Last Answer : Beryllium is used in the manufacture of alloys. Copper-beryllium alloys are used in the preparation of high strength springs. Metallic beryllium is used for making windows of X-ray tubes. Magnesium ... vacuum tubes. Radium salts are used in radiotherapy, for example, in the treatment of cancer.

How does the of Hydration Enthalpy of alkaline earth metals vary & compare it with alkali metals

Description : How does the of Hydration Enthalpy of alkaline earth metals vary & compare it with alkali metals  

Last Answer : The hydration enthalpies of alkaline earth metal ions decrease with increase in ionic size down the group. Be2+> Mg2+ > Ca2+ > Sr2+ > Ba2+ The hydration enthalpies of alkaline earth metal ... and CaCl2 exist as MgCl2.6H2O and CaCl2· 6H2O while NaCl and KCl do not form such hydrates.  

How does the of Ionization Enthalpy of alkaline earth metals vary in comparison to alkali metals

Description : How does the of Ionization Enthalpy of alkaline earth metals vary in comparison to alkali metals 

Last Answer : The alkaline earth metals have low ionization enthalpies due to fairly large size of the atoms. Since the atomic size increases down the group, their ionization enthalpy decreases The first ionisation ... of the alkaline earth metals are smaller than those of the corresponding alkali metals.  

How does the atomic and Ionic Radii of alkaline earth metals vary in comparison to alkali metals

Description : How does the atomic and Ionic Radii of alkaline earth metals vary in comparison to alkali metals 

Last Answer : The atomic and ionic radii of the alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods. This is due to the increased nuclear charge in these elements. Within the group, the atomic and ionic radii increase with increase in atomic number.

Give reason .the compounds of alkaline earth metals are less ionic than alkali metals

Description : Give reason .the compounds of alkaline earth metals are less ionic than alkali metals

Last Answer : This is due to increased nuclear charge and smaller size. 

Name the alkaline earth metal used in radio therapy.

Description : Name the alkaline earth metal used in radio therapy. 

Last Answer : Radium salts are used in radiotherapy, for example, in the treatment of cancer. 

Why II group elements are called alkaline earth metals ?

Description : Why II group elements are called alkaline earth metals ? 

Last Answer :  These are called so because their oxides and hydroxides are alkaline in nature and these metal oxides are found in the earth’s crust.  

Which of the following elements is not an alkaline earth metal? w) beryllium x) barium y) calcium z) rubidium

Description : Which of the following elements is not an alkaline earth metal? w) beryllium x) barium y) calcium z) rubidium

Last Answer : ANSWER: Z -- RUBIDIUM

The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

Description : The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

Last Answer : ANSWER: Y -- ALKALINE EARTHS

The elements in group 1A of the periodic table are called: w) halogens x) alkaline earths y) alkali metals z) rare earths

Description : The elements in group 1A of the periodic table are called: w) halogens x) alkaline earths y) alkali metals z) rare earths

Last Answer : ANSWER: Y -- ALKALI METALS

Bee sting contains (1) An acidic liquid (2) a salt solution (3) an alkaline liquid (4) a corrosive liquid

Description : Bee sting contains (1) An acidic liquid (2) a salt solution (3) an alkaline liquid (4) a corrosive liquid

Last Answer : An acidic liquid

Catalytic converters are generally made from : (1) Alkaline metals (2) Hydrogen (3) Transition metals (4) Carbon

Description : Catalytic converters are generally made from : (1) Alkaline metals (2) Hydrogen (3) Transition metals (4) Carbon

Last Answer : Transition metals

Gypsum is used for improvement of: (1) Alkaline soils (2) Saline soils (3) Podsols (4) Acidic soils

Description : Gypsum is used for improvement of: (1) Alkaline soils (2) Saline soils (3) Podsols (4) Acidic soils

Last Answer : Saline soils

Bayer’s reagent is (1) Alkaline potassium permanganate (2) Acidified potassium permanganate (3) Hydrogen peroxide (4) Bromine water

Description : Bayer’s reagent is (1) Alkaline potassium permanganate (2) Acidified potassium permanganate (3) Hydrogen peroxide (4) Bromine water

Last Answer : Alkaline potassium permanganate

Drinking soda is (1) Alkaline (2) Acidic (3) Neutral (4) Oxidant

Description : Drinking soda is (1) Alkaline (2) Acidic (3) Neutral (4) Oxidant

Last Answer : Acidic

A reaction between the substances A and B has been found to give the following data: 3A + 2B -----> 2C + D?

Description : A reaction between the substances A and B has been found to give the following data: 3A + 2B -----> 2C + D?

Last Answer : My reaction is “HUH??”

Lavoisier did not share any basic substances ?

Description : Lavoisier did not share any basic substances ?

Last Answer : Lavoisier did not share copper.

What are all the substances in the world made of ?

Description : What are all the substances in the world made of ?

Last Answer : All the substances in the world are made up of tiny particles.

Are organic compounds electrolytic or covalent substances ?

Description : Are organic compounds electrolytic or covalent substances ?

Last Answer : Organic compounds are covalent substances.

What are the hardest substances ?

Description : What are the hardest substances ?

Last Answer : Diamond is the hardest substance ever discovered.

(3) the number of electrons orbiting around the nucleus Explanation: The chemical behavior of an atom is determined by the number of electrons on its outer shell. As for the chemical bonding properties of the atom, the electron configuration determines how it will bond, with what it will bond, and in what ratio atoms will bond to form the 20,000,000 different substances on Earth.

Description : (3) the number of electrons orbiting around the nucleus Explanation: The chemical behavior of an atom is determined by the number of electrons on its outer shell. As for the chemical bonding properties of ... , and in what ratio atoms will bond to form the 20,000,000 different substances on Earth.

Last Answer : Methyl phenyl ether can be obtained by reacting - (1) phenolate ions and methyl iodide (2) methoxide ions and bromobenzene (3) methanol and phenol (4) bromobenzene and methyl bromide

(1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. The solution more or less takes on the characteristics of the solvent including its phase, and the solvent is commonly the major fraction of the mixture.

Description : (1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a ... the solvent including its phase, and the solvent is commonly the major fraction of the mixture.

Last Answer : Choose the incorrect statement pertaining to organic compounds - (1) They have low melting and boiling points (2) They do not dissolve in water (3) They are not easily combustible (4) They contain mainly carbon and hydrogen

(4) sodium chloride contains hygroscopic impurities like magnesium chloride Explanation: Table salt is refined salt, which contains about 97 to 99 percent sodium chloride. It usually contains substances that make it freeflowing (anticaking agents) such as sodium aluminosilicate or magnesium carbonate. Because of Hygroscopic nature of salt it become wet in rainy season as the salt absorbs moisture from environment.

Description : (4) sodium chloride contains hygroscopic impurities like magnesium chloride Explanation: Table salt is refined salt, which contains about 97 to 99 percent sodium chloride. It usually contains substances that ... of salt it become wet in rainy season as the salt absorbs moisture from environment.

Last Answer : Which of the following could be used as fuel in propellant or rockets? (1) Liquid Hydrogen + Liquid Nitrogen (2) Liquid Oxygen + Liquid Argon (3) Liquid Nitrogen + Liquid Oxygen (4) Liquid Hydrogen + Liquid Oxygen

The function of skimming tank in sewage treatment is to remove – (1) oil and fatty substances (2) suspended solids (3) gritty substances (4) inorganic substances

Description : The function of skimming tank in sewage treatment is to remove – (1) oil and fatty substances (2) suspended solids (3) gritty substances (4) inorganic substances

Last Answer : (1) oil and fatty substances Explanation: Oil and grease traps are small size skimming basins provided to remove oil and grease and other small floating materials such as fats, vegetable debris, ... content of wastewater rise to the surface of wastewater and remains on top of liquid until removed.

Which of the following substances undergoes chemical change on heating? (1) Sodium chloride (2) Silica (3) Lead nitrate (4) Platinum wire

Description : Which of the following substances undergoes chemical change on heating? (1) Sodium chloride (2) Silica (3) Lead nitrate (4) Platinum wire

Last Answer : (3) Lead nitrate Explanation: Lead nitrate on heating decomposes to lead monoxide, nitrogen dioxide and oxygen. NO2 is liberated, along with oxygen, as a reddish brown gas.

Which one of the following substances does not have a melting point? (1) Bromine (2) Sodium chloride (3) Mercury (4) Glass

Description : Which one of the following substances does not have a melting point? (1) Bromine (2) Sodium chloride (3) Mercury (4) Glass

Last Answer : (3) Mercury Explanation: The boiling point is the temperature at which a material changes from a liquid to a gas (boils) while the melting point is the temperature at which a material changes from a solid to a liquid (melts).

Activated Charcoal is used to remove colouring matter from pure substances by – (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction

Description : Activated Charcoal is used to remove colouring matter from pure substances by – (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction

Last Answer : (3) Adsorption Explanation: Heating wood to a very high temperature in the absence of air makes charcoal. When it is heated to an even higher temperature, about 930°C, impurities are driven from its ... . It does so by the process of adsorption, or by attracting these molecules to the surface.

Substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected are called - (1) Catalysts (2) Hydrocarbons (3) Oxidising agents (4) Substitutes

Description : Substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected are called - (1) Catalysts (2) Hydrocarbons (3) Oxidising agents (4) Substitutes

Last Answer : (1) Catalysts Explanation: Catalysts are substances that cause a reaction to occur or proceed at a different rate without the reaction itself being affected. Eg: hydrogenation of vegetable oils using a nickel catalyst.

There are some substances whose odor changes in acidic or basic media. These are called - (1) Olfactory indicators (2) Litmus indicator (3) Gustatory indicators (4) All of the above

Description : There are some substances whose odor changes in acidic or basic media. These are called - (1) Olfactory indicators (2) Litmus indicator (3) Gustatory indicators (4) All of the above

Last Answer : (1) Olfactory indicators Explanation: An Olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. Onion , clove oil and vanilla extract are examples.