GK Practice Question and Answer
8 Q: Which one of the following musical instrument is different from the other three?
526 063ff7ec295361d30f872bf9b
63ff7ec295361d30f872bf9b- 1Flutetrue
- 2Mashakfalse
- 3Shehnaifalse
- 4Algozafalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. " Flute"
Explanation :
Hence, the correct answer is "Flute". The guitar is of Western origin, has 6 strings, is plucked or strummed, and is not used in Indian music.
Q: A potentiometer is considered a versatile and accurate device to make an electrical measurement of EMF. Why?
551 063c8d7f2bdbddb32fda0219d
63c8d7f2bdbddb32fda0219d- 1Because the method involves a combinationfalse
- 2There are cells involvedfalse
- 3Because of potential gradientsfalse
- 4As there is no flow of current through the galvanometertrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "As there is no flow of current through the galvanometer"
Explanation :
A potentiometer is an accurate and versatile device to make electrical measurements of emf because the method involves a condition of no current flow through the galvanometer, the device can be used to measure potential difference, internal resistance of a cell and compare emf's of two sources. Q.
Q: Degree of dissociation does not depend on which of the following factors?
463 063c7cd09b338bc336f093b86
63c7cd09b338bc336f093b86- 1Nature of the solutefalse
- 2Nature of the solventfalse
- 3Soundtrue
- 4Concentrationfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Sound "
Explanation :
The Degree of dissociation does not depend on catalyst.The equivalent conductivity of 0.1M weak acid is 100 times less than that at infinite dilution.
Q: What is the degree of dissociation for strong electrolytes?
483 063c7ccbc8731ac33279b21f7
63c7ccbc8731ac33279b21f7- 11true
- 20false
- 3Less than 1false
- 4Greater than 1false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "1"
Explanation :
Strong electrolytes have a degree of dissociation close to one, while weak electrolytes have a degree of dissociation less than one. Solvent nature: Solvents with a high dielectric constant show more dissociation. Dilution: As the solution is diluted, the degree of dissociation increases.
Q: Polar satellites are used for high-resolution imaging of the earth’s surface because _____
658 063c7c166bd6d9033208efbdf
63c7c166bd6d9033208efbdf- 1They have better camerasfalse
- 2They are very high above the surface of the earth and travel slowly to gather more informationfalse
- 3They are closer to the surface of the earth and can cover vast areas very quicklytrue
- 4They can be launched by most countries in the worldfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "They are closer to the surface of the earth and can cover vast areas very quickly"
Explanation :
Explanation: Since polar satellites orbit close to the surface of the earth, it is easier to click images of the planet's surface with greater detail. Their high orbital velocity enables them to view most of the surface strip-by-stip very quickly with which high-resolution images can be constructed.
Q: Most waves used for communication purposes rely on geostationary satellites because _____
495 063c7baad1c47ef334bdd8984
63c7baad1c47ef334bdd8984- 1They cannot transmit data at long distances due to curvature of the earthtrue
- 2They are reflected by the atmospherefalse
- 3They are very cheapfalse
- 4It does not occupy space on the earth’s surfacefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "They cannot transmit data at long distances due to curvature of the earth"
Explanation :
Explanation: Most communication waves cannot transmit data accurately over long distances due to the curvature of the earth. They can only do so in the line of sight. However, they are not reflected by the ionosphere like radio waves and can be relayed to a wide area using geostationary satellites.
Q: If the kinetic energy of a satellite is halved, its orbital radius becomes _____
707 063c7b9788731ac33279af158
63c7b9788731ac33279af158- 1½ timestrue
- 22 timesfalse
- 34 timesfalse
- 4Infinityfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "½ times"
Explanation :
radius of its orbit will become half.
Q: What are the conditions for gas like Carbon monoxide to obey the ideal gas laws?
497 063c8f745bdbddb32fda0e8d0
63c8f745bdbddb32fda0e8d0- 1Low temperature and low pressurefalse
- 2Low temperature and high pressurefalse
- 3High temperature and low pressuretrue
- 4High temperature and high pressurefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "High temperature and low pressure "
Explanation :
A real gas can behave as an ideal gas if volume of molecule is negligible and interaction between molecule is negligible. This will happen if number of molecule per unit volume is very small. This is only possible at high temperature and low pressure.