| 2023-07-15 | Name the two metals from the following that will melt at body temperature \( \left(37^{\circ} \m... | 2:22 | 0 | |
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| 2023-07-15 | An element forms an oxide, \( \mathrm{A}_{2} \mathrm{O}_{3} \) that has acidic nature. Identify ... | 2:01 | 0 | |
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| 2023-07-15 | Why do we use copper and aluminium wire for transmission of electric current? | 3:01 | 0 | |
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| 2023-07-15 | Match The Followings
In this section, each question has two matching lists. Choices for the corr... | 10:51 | 3 | |
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| 2023-07-15 | Arrange the given metals in the decreasing order of reactivity: \( \mathrm{Na}, \mathrm{K}, \mat... | 1:53 | 0 | |
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| 2023-07-15 | What is the valency of phosphorus with atomic number 15 ? | 2:38 | 0 | |
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| 2023-07-15 | Name any one metal that will neither reacts with cold water nor with hot water, but it will reac... | 2:12 | 0 | |
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| 2023-07-15 | Match The Followings
In this section, each question has two matching lists. Choices for the corr... | 6:15 | 0 | |
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| 2023-07-15 | A green layer is slowly-slowly formed on a copper plate that is left exposed to air for a long t... | 1:43 | 0 | |
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| 2023-07-15 | Why does calcium float in water? | 1:53 | 3 | |
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| 2023-07-15 | Name the property due to which metal produces sound when metal is struck with hammer. | 1:25 | 1 | |
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| 2023-07-15 | What do you understand by term Thermal Conductivity? | 1:51 | 0 | |
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| 2023-07-15 | A doctor prescribed a tablet to a patient who is suffering from iron deficiency. The tablet does... | 2:29 | 2 | |
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| 2023-07-15 | Name two metals which are found in nature in the native state. | 1:54 | 0 | |
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| 2023-07-15 | Match The Followings
In this section, each question has two matching lists. Choices for the corr... | 3:39 | 1 | |
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| 2023-07-15 | Match The Followings
In this section, each question has two matching lists. Choices for the corr... | 3:20 | 4 | |
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| 2023-07-15 | Match The Followings
In this section, each question has two matching lists. Choices for the corr... | 4:17 | 2 | |
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| 2023-07-15 | Name any one metal that will react with a very dilute \( \mathrm{HNO}_{3} \) to liberate hydroge... | 2:05 | 0 | |
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| 2023-07-15 | True and False Statements Solder is an alloy of lead and tin. | 1:48 | 3 | |
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| 2023-07-15 | True and False Statements Metals can form positive ions by losing electrons to non-metals. | 3:18 | 1 | |
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| 2023-07-15 | True and False Statements Mercury and zinc are refined by liquation method. | 4:27 | 0 | |
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| 2023-07-15 | True and False Statements
Aluminium oxide can be reduced to aluminium, using carbon (coke) as a ... | 2:27 | 0 | |
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| 2023-07-15 | True and False Statements
Reaction that takes place in aluminothermic process is called thermite... | 4:55 | 0 | |
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| 2023-07-15 | True and False Statements Rusting of iron does not take place in boiled distilled water. | 4:58 | 0 | |
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| 2023-07-15 | True and False Statements
Electrovalent compounds will conduct electricity in solid state as ion... | 3:20 | 0 | |
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| 2023-07-15 | True and False Statements In electrolytic refining of copper, pure copper is taken as anode. | 4:01 | 0 | |
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| 2023-07-15 | True and False Statements The presence of carbon in pig iron, makes it very soft and malleable. | 2:53 | 0 | |
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| 2023-07-15 | Fill in the blanks The element which can be easily cut with knife are and | 2:20 | 0 | |
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| 2023-07-15 | Fill in the blanks At room temperature, one metal that is present in liquid state is | 3:16 | 0 | |
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| 2023-07-15 | Fill in the blanks
When \( \mathrm{Cu} \) is kept in open air, it slowly loses its shining brown... | 5:08 | 1 | |
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| 2023-07-15 | True and False Statements Aluminium is the most abundant metal found in the earths crust. | 2:09 | 0 | |
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| 2023-07-15 | Fill in the blanks Metal reacts with water to produce and hydrogen gas. | 2:23 | 0 | |
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| 2023-07-15 | Fill in the blanks is a non-metal which is lustrous. | 1:26 | 0 | |
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| 2023-07-15 | Consider the following statements:
P. \( \mathrm{HCl}(\mathrm{g}) \) turns the red litmus blue.
... | 3:26 | 0 | |
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| 2023-07-15 | Fill in the blanks During electrolytic refining of zinc, \( \mathrm{Zn} \) will get deposited on | 3:43 | 5 | |
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| 2023-07-15 | Fill in the blanks The Chemical formula of calcium nitride is | 1:45 | 2 | |
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| 2023-07-15 | Fill in the blanks The most abundant metal found in earth crust is | 1:17 | 1 | |
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| 2023-07-15 | Fill in the blanks is a non-metal which has a very high melting and boiling point. | 3:11 | 0 | |
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| 2023-07-15 | \( \mathrm{A} \) is an aqueous solution of acid and \( \mathrm{B} \) is an aqueous solution of b... | 4:01 | 0 | |
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| 2023-07-15 | Which of the following is not a example of hydrated salt ?
a. Espom salt
b. Baking soda
c. Washi... | 3:13 | 0 | |
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| 2023-07-15 | An element \( \mathrm{X} \) reacts with dilute \( \mathrm{H}_{2} \mathrm{SO}_{4} \) as well as w... | 4:45 | 1 | |
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| 2023-07-15 | Fill in the blanks Cinnabar is an ore of | 1:13 | 0 | |
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| 2023-07-15 | When a little sulphur in a spoon is heated, it burns with a blue flame that slowly begin to disa... | 2:43 | 0 | Let's Play |
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| 2023-07-15 | Arrange the following substances in decreasing order of their \( \mathrm{pH} \) values. The corr... | 2:55 | 3 | |
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| 2023-07-15 | Choose the correct statement(s)
(P) Most of the acids are water soluble
(Q) Acids react with met... | 4:13 | 0 | |
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| 2023-07-15 | Following statements are given:
\( \mathrm{X} \). Water acts as an acid or as a base that depend... | 3:22 | 4 | |
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| 2023-07-15 | Calamine is used to reduce the pain of ant bite as it reacts with (A) released due to the bite o... | 3:59 | 0 | |
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| 2023-07-15 | \( \mathrm{KMnO}_{4} \) is a strong oxidizing agent in acidic medium. To provide acidic medium \... | 7:05 | 2 | |
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| 2023-07-15 | Which of the following aqueous solution of salts will turns the red litmus to blue?
a. \( \mathr... | 4:02 | 0 | |
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| 2023-07-15 | Which of the acid from the following does NOT produces \( \mathrm{H}^{+} \)ions in absence of wa... | 1:45 | 1 | |
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| 2023-07-15 | When \( \mathrm{pH} \) paper is put in distilled water its colour changes to green. Then some co... | 4:07 | 4 | |
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| 2023-07-15 | Neutralization reaction among the following is
a. \( \mathrm{Na}_{2} \mathrm{O}+\mathrm{CO}_{2} ... | 3:24 | 0 | |
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| 2023-07-15 | Soda-acid fire extinguishers extinguishes prevent from fire
a. By cutting the supply of air.
b. ... | 4:01 | 0 | |
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| 2023-07-15 | Direction: In the following questions, a statement of assertion is followed by a statement of re... | 6:35 | 1 | |
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| 2023-07-15 | Direction: In the following questions, a statement of assertion is followed by a statement of re... | 3:30 | 1 | |
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| 2023-07-15 | Name the compound Z: a. Calcium hydroxide b. Lime c. Dead burnt plaster. d. Plaster of Paris | 2:53 | 0 | |
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| 2023-07-15 | Which of the following phenomena occur, when a small amount of acid is added to water?
a. Diluti... | 3:30 | 1 | |
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| 2023-07-15 | Sodium hydroxide is: a. Basic b. Deliquescent c. Alkali d. Neutral | 2:12 | 1 | |
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| 2023-07-15 | Case-Based-I: A solid compound A on heating gives carbon dioxide gas and a solid residue. The re... | 3:32 | 1 | |
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| 2023-07-15 | Which of the following are the INCORRECT increasing order of acid strength?
a. Water \( \mathrm{... | 3:38 | 0 | |
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| 2023-07-15 | Name the compound Y: a. Dead burnt plaster b. Limestone c. Lime water d. Plaster of Paris | 2:58 | 1 | |
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| 2023-07-15 | Name the compound \( \mathrm{X} \) :
a. Plaster of paris
b. Calcium hydroxide
c. Slaked lime
d. ... | 4:07 | 0 | |
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| 2023-07-15 | Case-Based-I: A solid compound A on heating gives carbon dioxide gas and a solid residue. The re... | 3:02 | 0 | |
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| 2023-07-15 | Direction: In the following questions, a statement of assertion is followed by a statement of re... | 5:16 | 1 | |
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| 2023-07-15 | Case-Based-I: A solid compound A on heating gives carbon dioxide gas and a solid residue. The re... | 2:40 | 0 | |
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| 2023-07-15 | Direction: In the following questions, a statement of assertion is followed by a statement of re... | 4:21 | 0 | |
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| 2023-07-15 | Direction: In the following questions, a statement of assertion is followed by a statement of re... | 3:58 | 0 | |
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| 2023-07-15 | The turmeric solution will turn red by an aqueous solution of-
a. Potassium acetate
b. Copper ni... | 5:24 | 0 | |
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| 2023-07-15 | \( \mathrm{CuSO}_{4} \cdot \mathrm{K}_{2} \mathrm{SO}_{4} \) is an example
a. An acid salt
b. A ... | 6:29 | 0 | |
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| 2023-07-15 | \( \mathrm{Z} \) is a substance that is water soluble and its aqueous solution turns red litmu... | 6:55 | 3 | |
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| 2023-07-15 | When \( \mathrm{HCl}(\mathrm{g}) \) is passed through water
a. It gives both \( \mathrm{H}^{+} \... | 2:06 | 0 | |
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| 2023-07-15 | \( \mathrm{pH} \) of a \( 0.001 \mathrm{M} \mathrm{NaOH} \) solution is a. 2 b. 10 c. 3 d. 11 | 3:17 | 0 | |
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| 2023-07-15 | Which is not correct pair of conjugate acid and base from the following?
a. \( \mathrm{HNO}_{3} ... | 2:07 | 1 | |
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| 2023-07-15 | Choose the correct oxide from following oxides which when dissolved in water gives a solution th... | 4:42 | 4 | |
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| 2023-07-15 | The \( \mathrm{pH} \) of three solutions \( \mathrm{X}, \mathrm{Y}, \mathrm{Z} \) is \( 6,4,8 \)... | 4:37 | 6 | |
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| 2023-07-15 | The acid that is used by goldsmiths for cleaning gold and silver ornaments is:
a. \( \mathrm{CH}... | 2:35 | 0 | |
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| 2023-07-15 | In cold countries, which of the following compound is usually spread on icy roads for melting ic... | 2:17 | 0 | |
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| 2023-07-15 | Name the gas that is evolved on reaction of dilute hydrochloric acid with sodium sulphite?
a. Su... | 1:37 | 0 | Let's Play |
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| 2023-07-15 | An unknown solution in a test tube was given to a student, when universal indicator solution is ... | 3:43 | 0 | |
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| 2023-07-15 | \( \mathrm{A}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{B}, \mathrm{B} \) is used to remove ... | 1:44 | 1 | |
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| 2023-07-15 | When copper oxide and dilute hydrochloric acid react, the colour changes to which of the followi... | 2:26 | 0 | |
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| 2023-07-15 | Which one of the following can be used as an acidbase indicator by a blind student?
a. Turmeric
... | 3:01 | 0 | |
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| 2023-07-15 | When \( \mathrm{HCl} \) gas is prepared on a humid day, the gas is generally passed through the ... | 2:37 | 0 | |
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| 2023-07-15 | \( \mathrm{NaOH} \) is obtained by the electrolysis of
a. Aq. solution of \( \mathrm{NaCl} \)
b.... | 2:54 | 0 | |
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| 2023-07-15 | \( \mathrm{Ag}_{2} \mathrm{~S} \) reacts with \( \mathrm{H}_{2} \mathrm{SO}_{4} \) to form which... | 1:39 | 0 | |
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| 2023-07-15 | \( \mathrm{NaHCO}_{3} \) is formed by which of the following reaction:
a. \( \mathrm{NaOH}+\math... | 2:58 | 1 | |
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| 2023-07-15 | The correct statements about an aqueous solution of an acid and of a base from the following are... | 2:34 | 1 | |
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| 2023-07-15 | When lime water reacts with chlorine to give:
a. Bleaching powder
b. Baking soda
c. Baking powde... | 2:27 | 0 | |
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| 2023-07-15 | In \( \mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O} \), no. of \( \mathrm{H}_{2} \mathrm{O... | 3:35 | 0 | |
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| 2023-07-15 | What is product formed when zinc metals granules reacts with sodium hydroxide?
a. Sodium zincate... | 1:41 | 1 | |
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| 2023-07-15 | The acidic soil that is not good for health of growing plants, is neutralized by
a. Magnesium hy... | 2:17 | 2 | |
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| 2023-07-15 | The reaction of vinegar with baking soda will release which gas
a. Hydrogen
b. Nitrogen
c. Carbo... | 1:56 | 0 | |
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| 2023-07-15 | Select the element that react with acid as well as base
a. Sulphur
b. Copper
c. Magnesium
d. Alu... | 3:02 | 0 | Let's Play |
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| 2023-07-15 | The \( \mathrm{pH} \) of a solution that will turn red litmus to blue- a. 1 b. 9 c. 3 d. 7 | 2:17 | 0 | |
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| 2023-07-15 | The metal oxides that will show both acidic and basic characters?
a. \( \mathrm{K}_{2} \mathrm{O... | 4:55 | 0 | Show |
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| 2023-07-15 | Which of the following compounds is neutral to litmus?
a. \( \mathrm{NaNO}_{3} \)
b. \( \mathrm{... | 5:01 | 0 | |
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| 2023-07-15 | Which of the following is considered as a strong base?
a. Ammonium hydroxide \( \left(\mathrm{NH... | 2:52 | 0 | |
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| 2023-07-15 | Which of the following is considered as a strong acid?
a. Acetic acid
b. Maleic acid
c. Nitric a... | 3:19 | 0 | |
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| 2023-07-15 | Which of following compound is alkaline in aqueous medium?
a. \( \mathrm{Na}_{2} \mathrm{CO}_{3}... | 4:48 | 0 | |
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| 2023-07-15 | is called impure sodium chloride. a. Gypsum salt b. Rock salt c. Blue vitrol salt d. Carbonate salt | 2:55 | 1 | |
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