Description : Alkali metal salt "X" gives a pale violet colour in flame test "X" is :
Last Answer : Alkali metal salt "X" gives a pale violet colour in flame test "X" is : A. NaCl B. LiCl C. KCl D. None of these
Description : Colour imparted to the Bunsen flame by strontium salt is - (1) bluish green (2) apple-green (3) brick red (4) crimson red
Last Answer : (4) crimson red Explanation: A flame test is performed by introducing a sample into the blue flame of a bunsen burner and noting any change in the colour of the flame. The tests can be used ... metallic elements in salts. With strontium salt, the colour of Bunsen flame ranges from crimson to red.
Description : Colour imparted to the Bunsen flame by strontium salt is (1) bluish green (2) apple-green (3) brick red (4) crimson red
Last Answer : crimson red
Description : Which metal gives violet colour in oxidising flame when heated with borax ?
Last Answer : Which metal gives violet colour in oxidising flame when heated with borax ? A. Fe B. Pb C. Co D. Mn
Description : How many of following metals impart a characteristic colour to the Bunsen flame ? `(i) Na " " (ii) Li " " (iii) K " " (iv) Ba` `(v) Sr " " (vi) Mg " "
Last Answer : How many of following metals impart a characteristic colour to the Bunsen flame ? `(i) Na " " (ii) Li " " (iii) K ... ix) `Be " " (x )Ca " " (x i)Cu`
Description : What turns tetul blue litmus paper into what ?
Last Answer : Tetul converts blue litmus into red litmus.
Description : (i) `KI+H_(2)O+O_(3)rarrA+B+O_(2)` (A turns moist starch paper blue, B turns red litmus blue) (ii) A(dry)`+O_(3)rarrX+O_(2)` What is true about X in t
Last Answer : (i) `KI+H_(2)O+O_(3)rarrA+B+O_(2)` (A turns moist starch paper blue, B turns red litmus blue) ... )` D. Average oxidation state of iodine in X is `+5`
Description : Acid turns blue litmus paper to?
Last Answer : Red
Description : Blue Litmus Paper turns _______ on contact with an acidic solution
Description : What is the colour of litmus paper in salt?
Last Answer : The colur remain unchanged.
Description : Which metal salt gives lilac colour to the flame?
Last Answer : Potassium
Description : Bases turns red litmus paper into?
Last Answer : Blue
Description : Dry ammonia gas has no action on litmus paper but a solution of ammonia in water turns litmus paper color. Why?
Last Answer : Answer. A solution of ammonia in water produces OH– ions which make the solution basic and turn red litmus paper blue.
Description : An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change ? -SST 10th
Last Answer : D - The aqueous solution is a base as it turns red litmus solution blue. An acidic solution such as hydrochloric acid would reverse the change. In contrast, hydrochloric acid would turn blue ... not be able to reverse the change. These substances would only change red litmus solution to blue.
Description : One property of ammonia is – (1) It is insoluble in water (2) it is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue
Last Answer : (4) Its aqueous solution turns red litmus blue Explanation: The main use of litmus is to test whether a solution is acidic or basic. For instance, ammonia gas, which is alkaline, colours the red litmus paper blue.
Description : If a solution turns blue litmus red, its pH is likely to be : (1) 7 (2) 8 (3) 9 (4) 6
Last Answer : (4) 6 Explanation: An acidic solution turns blue litmus red. On the pH scale, acids have values less than 7, whereas bases have values greater than 7. Solutions with pH equal to 7 are neutral in nature. Therefore the pH of the given solution is likely to be 6.
Description : A solution turns blue litmus red, its pH is likely to be - (1) 11 (2) 9 (3) 5 (4) 10
Last Answer : (3) 5 Explanation: If the litmus paper turns red, it indicates the presence of an acid while if it turns blue, it indicates the presence of a base.
Description : A solution which turns red litmus to blue is called?
Last Answer : Metalloids
Description : An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change? (a) Baking powder (b) Lime (c) Ammonium hydroxide solution (d) Hydrochloric acid
Last Answer : (d) Hydrochloric acid
Description : Which of the properties listed below would you expect a solution to have if it is an acid? w) It feels slippery to the touch. x) It tastes bitter. y) It turns red litmus blue. z) It is a conductor of electricity.
Last Answer : ANSWER: Z -- IT IS A CONDUCTOR OF ELECTRICITY.
Description : One property of ammonia is (1) It is insoluble in water (2) It is a odourless gas (3) It is a yellowish gas (4) Its aqueous solution turns red litmus blue
Last Answer : Its aqueous solution turns red litmus blue
Description : In the following diagram bunsen flame the (X ) represent.
Last Answer : In the following diagram bunsen flame the (X ) represent. A. Oxidising zone B. Reducing zone C. Lower temperature zone D. Hottest portion of flame
Description : The hottest part of the flame of a Bunsen burner is the
Last Answer : The hottest part of the flame of a Bunsen burner is the A. Blue Zone B. Zone of complete combustion ... D. All parts of the flame are equally hot.
Description : In which direction should you move the inoculating loop in the Bunsen burner flame?
Last Answer : Need answer
Description : Why should you turn a Bunsen burner to a yellow flame if you need to leave it?
Last Answer : The yellow flame is more visible - making it easier for othersto see. It's also a colder flame than the blue conical one.
Description : Why do cations emit colors when heated in a Bunsen burner flame?
Last Answer : Atoms were excited by heating, electrons move to a higher energy level and as these electrons fall back to a lower energy level, the specific radiation for the element is emitted.
Description : Bunsen burner is an example of a/an __________ burner. (A) Inside mixing/premix type (B) Outside mixing/diffusion flame/nozzle mix type (C) Rotary cup (D) Submerged combustion
Last Answer : (A) Inside mixing/premix type
Description : What colour does litmus paper turn in sugar?
Last Answer : What is the answer ?
Description : Generally metallic oxides are basic and non-metallic are acidic in nature. Solution of which of the following oxides in water will change the colour of blue litmus to red? a)sulphur dioxide b)Magnesium oxide c)iron oxide d)copper oxide
Last Answer : a)sulphur dioxide
Description : Ethers are kept in brown bottles because (a) Brown bottles are cheaper than colorless clear bottles (b) Ethers absorb moisture (c) Ethers evaporate readily (d) Ethers are oxidized to explosive peroxides
Last Answer : Ethers are oxidized to explosive peroxides
Description : What is the name of a colorless gas that turns lime water milky?
Last Answer : This gas is carbon dioxide.
Description : What happens when excess of carbon dioxide gas is passed through lime water? (a) Lime water first turns milky and then colorless (b) Lime water turns bluish me water turns milky (d) Lime water turns blackish
Last Answer : (a) Lime water first turns milky and then colorless
Description : Blue litmus paper is converted into red in solution of which thing? -Do You Know?
Last Answer : Acid Blue litmus turns red in acids and Red litmus turns blue in bases
Last Answer : Acid turns blue litmus paper red.
Description : What substance will turn blue litmus paper red?
Description : Blue litmus paper is converted into red in solution of which thing?
Last Answer : acid
Description : A solution of sodium thiosulphate on addition of few drops of ferric chloride gives violet colour due to the formation of
Last Answer : A solution of sodium thiosulphate on addition of few drops of ferric chloride gives violet colour due to the formation of ... `Fe_(2)(S_(2)O_(3))_(2)`
Description : 23 Which one of the following sets of colour combinations is added in colour vision in TV? A. Red, green and blue B. Orange, black and violet C. White, red and Yellow D. Green, Yellow and Blue
Last Answer : ANSWER: A
Description : A man with colour blindness will see red as - (1) Yellow (2) Blue (3) Green (4) Violet
Last Answer : (3) Green Explanation: Colour-blindness is the inability to distinguish the differences between certain colours. This condition results from an absence of colour-sensitive pigment in the cone cells of the ... type is red-green colour-blindness, where red and green are seen as the same color.
Description : The colour of Emerald is - (1) Violet (2) Yellow (3) Deep Green (4) Prussian Blue
Last Answer : (3) Deep Green Explanation: The most desirable emerald colors are bluish green to pure green, with vivid color saturation and tone that's not too dark. The most-prized emeralds are highly transparent. Their color is evenly distributed, with no eyevisible colorzoning.
Description : Which of the following colour is least scattered by fog, dust or smoke : A. Violet B. Blue C. Red D. Yellow
Last Answer : C. Red
Description : A man with colour blindness will see red as (1) Yellow (2) Blue (3) Green (4) Violet
Last Answer : Green
Description : Chlorine is used in swimming pools as a disinfecta In its natural, standard state it is a: w) blue liquid x) colorless crystals y) yellow-green gas z) reddish-brown gas
Last Answer : ANSWER: Y -- YELLOW-GREEN GAS
Description : Which gas turns litmus colourless?
Last Answer : Chlorine
Description : Why the blue colour of CuSO4 turns colourless during electrolysis of CuSO4 solution by platinum electrode.
Last Answer : The platinum electrodes are inert. Hence does not dissolve into the solution. The Cu++ ions (blue) present in the solution are discharged on the surface of cathode & OH - are ... a result of this electrolysis, blue coloured CuSO4 solution is slowly converted into colorless H2SO4 solution.
Description : Helium (He), neon (Ne) and argon (Ar) are all colorless, odorless gases with low chemical reactivity. Based on the periodic table, which other element would also have those same properties?
Last Answer : Helium
Description : What colour of litmus in sulfuric acid is?
Last Answer : red
Description : What is the correct scientific term for a substance that changes colour in this way for litmus?
Last Answer : indicator
Description : Which of the following is an acid base indicator.... a)Vinegar b)Baking soda c)Litmus d)Common salt -Science-7
Last Answer : c) Litmus is a acid-base indiactor.
Description : A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution is added to the aforementio
Last Answer : A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution ... . `S^(2-)` D. `Cl^(-)`