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Aayushi Patel
Subject: Science
, asked 34 minutes ago
What is translocation ?explain in detail
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2
Shoonya
Subject: Science
, asked 6 hours, 34 minutes ago
will there be any colour change in this reaction: fe+CuSo4---->Cu+FeSo4
Answer
1
Sai Krishna Nayak
Subject: Science
, asked 7 hours, 10 minutes ago
An object is placed 15 cm in front of a concave mirror. The radius of curvature of the mirror is 20 cm. The magnification of the image is formed by the mirror is m. What is the value of m ?
Answer
2
Sai Krishna Nayak
Subject: Science
, asked 7 hours, 20 minutes ago
An acid is a chemical substance that yields hydrogen ions (H +)when dissolved in water . The pH of an acid or a base is defined as the negative logarithm of the hydrogen ion concentration,i.e.,pH = -log [H+] .
Among the given pH values, what will be the most probable pH value of an acidic solution having the least concentration of hydrogen ions ?
Answer
1
Sai Krishna Nayak
Subject: Science
, asked 7 hours, 28 minutes ago
Which of the following statements is true for the reaction between sodium sulphate solution and barium chloride solution ?
A) It is a double displacement reaction and a white precipitate of barium sulphate is formed .
B) It is a double displacement reaction and a white precipitate of sodium chloride is formed.
C) Sodium undergoes oxidation.
D) Barium undergoes reduction.
Answer
1
Neha Thomas
Subject: Science
, asked 8 hours, 56 minutes ago
Give (at least 2) examples for -
i) sonorous metals
ii) non - sonorous metals .
Answer
1
Neha Thomas
Subject: Science
, asked 8 hours, 59 minutes ago
Why are school bells made of metals ?
Answer
1
Neha Thomas
Subject: Science
, asked 9 hours, 3 minutes ago
Why are electric wires coated with PVC or a rubber like material ?
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1
Neha Thomas
Subject: Science
, asked 9 hours, 4 minutes ago
Name some metals used for making cooking vessels and why are these metals used for making vessels .
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1
Shoonya
Subject: Science
, asked 9 hours, 6 minutes ago
when calcium hydroxide reacts with co2 in the air, calcium carbonate is formed along with h2o that gives the shine after a whitewash. so it must be the calcium carbonate that gives the shine, then what happens to the h2o formed during the reaction?
Answer
1
Tejaswini J
Subject: Science
, asked 9 hours, 32 minutes ago
please answer
only experts
Choose all correct statements; In the following ray diagram
Medium A is rarer than medium C
Refractive index of A is greater than that of C
Speed of light in medium A = speed of light in medium C
Relative refractive index of medium A with respect to medium C is = 1
Answer
1
Sai Krishna Nayak
Subject: Science
, asked 9 hours, 32 minutes ago
Please answer this !!!!!
Answer
1
Tejaswini J
Subject: Science
, asked 9 hours, 33 minutes ago
Please answer
only experts
Refractive index of a medium is 2.5. it means that,
Speed of light in that medium is 2.5 times the speed of light in water.
Speed of light in that medium is 2.5 times the speed of light in vacuum.
Speed of light in that medium is (1/2.5) times the speed of light in vacuum.
Speed of light in that medium is (1/2.5) times the speed of light in water.
Answer
1
Tejaswini J
Subject: Science
, asked 9 hours, 35 minutes ago
Please answer only experts
Choose all correct statements: In the ray diagram, given below
Angle of refraction or refraction cannot be same in this case.
If reflection takes place, then angle of reflection is 0°
If refraction takes place, then angle of refraction is 0°
Angle of incidence is 90°
Answer
1
Tejaswini J
Subject: Science
, asked 9 hours, 36 minutes ago
PLEASE ANSWER ASAP
ONLY EXPERTS
Choose all correct statements: Refractive index of medium A with respect to medium B is 4/3 and refractive index of medium A with respect to medium C is 3/2.
When light travels from B to C light bends away from the normal
Medium B is denser than medium C
Ratio of speed of light in medium B to the speed of light in medium A = 4/3
Refractive index of C with respect to B is 8/9
Answer
1
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What are you looking for?
Among the given pH values, what will be the most probable pH value of an acidic solution having the least concentration of hydrogen ions ?
A) It is a double displacement reaction and a white precipitate of barium sulphate is formed .
B) It is a double displacement reaction and a white precipitate of sodium chloride is formed.
C) Sodium undergoes oxidation.
D) Barium undergoes reduction.
i) sonorous metals
ii) non - sonorous metals .
only experts
Choose all correct statements; In the following ray diagram
only experts
Refractive index of a medium is 2.5. it means that,
Choose all correct statements: In the ray diagram, given below
ONLY EXPERTS
Choose all correct statements: Refractive index of medium A with respect to medium B is 4/3 and refractive index of medium A with respect to medium C is 3/2.