The work done when 1 mole of a gas expands reversibly and Isothermally from
pressure of 5 atm to 1 atm at 300 K is (Given log 5-0.6989 and R-8.314 JK mol)
pressure of 5 atm to 1 atm at 300 K is (Given log 5-0.6989 and R-8.314 JK mol)
Anonymous Quiz
13%
150 J
30%
+4014.6J
42%
-4014.6 J
15%
Zero J
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Which one of the following electrons in the ground state will have least amount ofenergy?
Anonymous Quiz
14%
An electron in 2p orbital of carbon atom
29%
The electron of copper atom present in4s orbital.
22%
The outermost electron in sodium atom.
35%
An electron in hydrogen atom.
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Let L₁ and Le be the orbital angular momentum of an electron in the first and second excited states of hydrogen atom, respectively. According to the Bohr's model, the ratio L₁: L₂ is:
Anonymous Quiz
18%
2:1
25%
3:2
38%
2:3
19%
1:2
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During simple harmonic motion of a body, the energy at the extreme positions is
Anonymous Quiz
27%
is always zero
22%
purely kinetic
38%
purely potential
14%
both kinetic and potential
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Important Points of NCERT -
• 1 gm Haemoglobin carry 1.34 ml of Oxygen.
• 100 ml blood contain 15 gm (12-16gm) Haemoglobin.
• 100 ml Blood carries 20 ml of Oxygen(1.34x15)
• But under normal physiological processes, 100 ml Blood delivers 25% (5ml) of Oxygen
• 1 molecule of Haemoglobin can carry maximum 4 Oxygen molecules.
• 1 gm Haemoglobin carry 1.34 ml of Oxygen.
• 100 ml blood contain 15 gm (12-16gm) Haemoglobin.
• 100 ml Blood carries 20 ml of Oxygen(1.34x15)
• But under normal physiological processes, 100 ml Blood delivers 25% (5ml) of Oxygen
• 1 molecule of Haemoglobin can carry maximum 4 Oxygen molecules.
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FIRSE BATA RAHA EK BAAR
✅ - AADHAR CARD ORIGINAL LE JANA PHOTO COPY NAHI
✅ - PRO FORMA PAGE NO - 2 SELF DECLARATION
✅ - 2 PASSPORT SIZE PHOTO
✅ - ADMIT CARD COLOUR YA BLACK AND WHITE DONO CHALEGA..
✅ - PEN UDHAR SE MILEGA
LADKIYA TSHIRT PEHN SAKTI...
HAIR BANDHE HUE NAHI HONE CHAHIYE.. WRIST WATCH NAHI PEHNA OR POCKET KHALI RAKHNA . SHOES NAHI PEHNA
LADKE TSHIRT CHAPAL PAJAMA.WRIST WATCH NAHI PEHNA . SHOES NAHI PEHNA.
PANI KI TRANSPARENT BOTTLE LE JA SAKTE HO..
✅ - AADHAR CARD ORIGINAL LE JANA PHOTO COPY NAHI
✅ - PRO FORMA PAGE NO - 2 SELF DECLARATION
✅ - 2 PASSPORT SIZE PHOTO
✅ - ADMIT CARD COLOUR YA BLACK AND WHITE DONO CHALEGA..
✅ - PEN UDHAR SE MILEGA
LADKIYA TSHIRT PEHN SAKTI...
HAIR BANDHE HUE NAHI HONE CHAHIYE.. WRIST WATCH NAHI PEHNA OR POCKET KHALI RAKHNA . SHOES NAHI PEHNA
LADKE TSHIRT CHAPAL PAJAMA.WRIST WATCH NAHI PEHNA . SHOES NAHI PEHNA.
PANI KI TRANSPARENT BOTTLE LE JA SAKTE HO..
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To Everyone appearing for NEET Today:
Stay calm, focused, believe in yourself and give it your all. Your hard work will pay off.
I know that you're all feeling a mix of excitement and nerves right now, but I want to assure you that everything is going to be great. Whatever hard work you've done will pay off. Just focus on giving your best, and the rest will follow.
All the best for your Exam today!
Stay calm, focused, believe in yourself and give it your all. Your hard work will pay off.
I know that you're all feeling a mix of excitement and nerves right now, but I want to assure you that everything is going to be great. Whatever hard work you've done will pay off. Just focus on giving your best, and the rest will follow.
All the best for your Exam today!
👍19💯5❤1🎉1
Group 13 Elements (Boron Group):
Includes boron (B), aluminum (Al), gallium (Ga), indium (In), and thallium (Tl).
Boron is a metalloid with unique properties and forms covalent compounds.
Aluminum is widely used in industries due to its lightweight and corrosion-resistant nature.
Gallium is a metal with a low melting point, used in semiconductors and LED technology.
Group 14 Elements (Carbon Group):
Includes carbon (C), silicon (Si), germanium (Ge), tin (Sn), and lead (Pb).
Carbon is the basis of organic chemistry and has diverse allotropes, including diamond and graphite.
Silicon is a significant component of semiconductors and plays a vital role in modern electronics.
Group 15 Elements (Nitrogen Group):
Includes nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi).
Nitrogen is essential for life and exists as diatomic molecules in the atmosphere.
Phosphorus is crucial for biological processes and is used in fertilizers and detergents.
Group 16 Elements (Oxygen Group/Chalcogens):
Includes oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po).
Oxygen is vital for respiration and combustion processes.
Sulfur is widely used in the chemical industry and exists as elemental sulfur and various sulfide compounds.
Group 17 Elements (Halogens):
Includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
Halogens are highly reactive nonmetals and exist as diatomic molecules in their elemental form.
Chlorine is widely used as a disinfectant, and iodine is used in antiseptics.
Group 18 Elements (Noble Gases):
Includes helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
Noble gases have full valence electron shells, making them stable and unreactive.
Helium is used in balloons and as a coolant in various applications.
Group 16, 17, and 18 Compounds:
Students should know the preparation, properties, and uses of common compounds like sulfuric acid, hydrochloric acid, ozone, hydrogen peroxide, and ammonia.
General Trends in p-Block Elements:
Understanding periodic trends like atomic size, ionization energy, electronegativity, and electron affinity within the p-block elements.
Important Compounds:
Learn about important compounds like borax, boron trifluoride, silicones, phosphine, hydrogen halides, carbon dioxide, sulfur dioxide, etc.
Allotropes and Applications:
Understanding the various allotropes of carbon (diamond, graphite, fullerene) and their applications in technology.
Includes boron (B), aluminum (Al), gallium (Ga), indium (In), and thallium (Tl).
Boron is a metalloid with unique properties and forms covalent compounds.
Aluminum is widely used in industries due to its lightweight and corrosion-resistant nature.
Gallium is a metal with a low melting point, used in semiconductors and LED technology.
Group 14 Elements (Carbon Group):
Includes carbon (C), silicon (Si), germanium (Ge), tin (Sn), and lead (Pb).
Carbon is the basis of organic chemistry and has diverse allotropes, including diamond and graphite.
Silicon is a significant component of semiconductors and plays a vital role in modern electronics.
Group 15 Elements (Nitrogen Group):
Includes nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi).
Nitrogen is essential for life and exists as diatomic molecules in the atmosphere.
Phosphorus is crucial for biological processes and is used in fertilizers and detergents.
Group 16 Elements (Oxygen Group/Chalcogens):
Includes oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po).
Oxygen is vital for respiration and combustion processes.
Sulfur is widely used in the chemical industry and exists as elemental sulfur and various sulfide compounds.
Group 17 Elements (Halogens):
Includes fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
Halogens are highly reactive nonmetals and exist as diatomic molecules in their elemental form.
Chlorine is widely used as a disinfectant, and iodine is used in antiseptics.
Group 18 Elements (Noble Gases):
Includes helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
Noble gases have full valence electron shells, making them stable and unreactive.
Helium is used in balloons and as a coolant in various applications.
Group 16, 17, and 18 Compounds:
Students should know the preparation, properties, and uses of common compounds like sulfuric acid, hydrochloric acid, ozone, hydrogen peroxide, and ammonia.
General Trends in p-Block Elements:
Understanding periodic trends like atomic size, ionization energy, electronegativity, and electron affinity within the p-block elements.
Important Compounds:
Learn about important compounds like borax, boron trifluoride, silicones, phosphine, hydrogen halides, carbon dioxide, sulfur dioxide, etc.
Allotropes and Applications:
Understanding the various allotropes of carbon (diamond, graphite, fullerene) and their applications in technology.
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For the reaction, N2(g) + 3H2(g) → 2NH3(g) d[NH3]/dt = 2 x10-4 mol L-1s-1, the value of -d[H2]/dt would be
Anonymous Quiz
45%
3 x 10-4 mol L-1s-1
29%
4 x 10-4 mol L-1s-1
21%
6×10-4 mol L-1s-1
5%
1 x 10-4 mol L-1s-1
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Inulin is a polymer of ______
Anonymous Quiz
24%
glucose and fructose
22%
glucose
37%
fructose
16%
glucose, fructose and galactose
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Stress, like pressure, is always perpendicular to a plane. True or False?
Anonymous Quiz
63%
Ture
37%
False
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✅Very important points - Human Reproduction
🌟Uterus also called womb.
🌟 Longest unstripped muscles of the body are found in the walls of uterus. (During pregnancy)
🌟 Clitoris is a homologous to the penis in the male.
🌟 Bartholin Glands : It is homologous to Cowper's gland of male
🌟 A functional mammary gland is characteristic of all female mammals.
🌟 The milk produced during the initial few days of lactation is called colostrum which contains antibodies (IgA) absolutely essential to develop resistance for the new-born babies.
⚡️ Liberation of sperms from Sertoli cells of seminiferous tubules is called spermiation.
⚡️ Liberation of sperms from testes is called semination.
⚡️ Liberation of sperms from body of male is called ejaculation .
⚡️ Mammalian sperms are transfered to vagina of female by the process called insemination.
⚡️ In 1 ml of semen, 20 to 120 millions of sperms are present in human being.
⚡️ Leydig's cells mature at 10 yrs. of age.
⚡️ In humans (and most vertebrates), the first polar body does not undergo meiosis II.
⚡️ The first polar body is, therefore, formed merely to get rid of unwanted chromosomes.
⚡️ 65-74 days are required to complete the cycle of spermatogenesis in human being.
⚡ Get Latest Best Notes :- Join Now
🌟Uterus also called womb.
🌟 Longest unstripped muscles of the body are found in the walls of uterus. (During pregnancy)
🌟 Clitoris is a homologous to the penis in the male.
🌟 Bartholin Glands : It is homologous to Cowper's gland of male
🌟 A functional mammary gland is characteristic of all female mammals.
🌟 The milk produced during the initial few days of lactation is called colostrum which contains antibodies (IgA) absolutely essential to develop resistance for the new-born babies.
⚡️ Liberation of sperms from Sertoli cells of seminiferous tubules is called spermiation.
⚡️ Liberation of sperms from testes is called semination.
⚡️ Liberation of sperms from body of male is called ejaculation .
⚡️ Mammalian sperms are transfered to vagina of female by the process called insemination.
⚡️ In 1 ml of semen, 20 to 120 millions of sperms are present in human being.
⚡️ Leydig's cells mature at 10 yrs. of age.
⚡️ In humans (and most vertebrates), the first polar body does not undergo meiosis II.
⚡️ The first polar body is, therefore, formed merely to get rid of unwanted chromosomes.
⚡️ 65-74 days are required to complete the cycle of spermatogenesis in human being.
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✤ Terminologies in Wave Motion -
➷ Amplitude
➷ Period
➷ Wavelength
➷ Frequency
➷ Wave velocity
➷ Phase or phase angle (O)
➷ Phase difference
➷ Path difference
➷ Time difference
★ Amplitude (A): The amplitude of a wave is the maximum displacement of any particle of the medium from its equilibrium position.
★ Period (T): Period (T) of a wave is the time taken by any particle of the medium to complete one vibration during a period (T).
★ Wavelength (λ): Wavelength (λ) is equal to the distance between two consecutive particles of the medium which are in the same state of vibration it is equal to the distance travelled by the wave by its time period (T).
★ Frequency (f): It is the number of vibrations made per second by any particles of the medium (f = 1/T). Since the frequency of a wave is a characteristic property of the source which is producing the wave motion, hence, the frequency of a wave does not change when a wave travels from one medium to another medium.
★ Phase or Phase Angle (Φ): It represents the state of vibration of the particle of a medium with respect to its mean position.
★ Phase Difference Δ(Φ): It represents the different state of vibration of a particle at two different instants (or) any pair of particles at the same instant.
★ Wave Velocity (v): It is the distance travelled by the wave in one second (v = λ/T). It is determined by the mechanical properties of the medium through which the wave propagates.
⚡ Get Best Notes :- Join Now
➷ Amplitude
➷ Period
➷ Wavelength
➷ Frequency
➷ Wave velocity
➷ Phase or phase angle (O)
➷ Phase difference
➷ Path difference
➷ Time difference
★ Amplitude (A): The amplitude of a wave is the maximum displacement of any particle of the medium from its equilibrium position.
★ Period (T): Period (T) of a wave is the time taken by any particle of the medium to complete one vibration during a period (T).
★ Wavelength (λ): Wavelength (λ) is equal to the distance between two consecutive particles of the medium which are in the same state of vibration it is equal to the distance travelled by the wave by its time period (T).
★ Frequency (f): It is the number of vibrations made per second by any particles of the medium (f = 1/T). Since the frequency of a wave is a characteristic property of the source which is producing the wave motion, hence, the frequency of a wave does not change when a wave travels from one medium to another medium.
★ Phase or Phase Angle (Φ): It represents the state of vibration of the particle of a medium with respect to its mean position.
★ Phase Difference Δ(Φ): It represents the different state of vibration of a particle at two different instants (or) any pair of particles at the same instant.
★ Wave Velocity (v): It is the distance travelled by the wave in one second (v = λ/T). It is determined by the mechanical properties of the medium through which the wave propagates.
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For the reaction, N2(g) + 3H2(g) → 2NH3(g) d[NH3]/dt = 2 x10-4 mol L-1s-1, the value of -d[H2]/dt would be
Anonymous Quiz
39%
3 x 10-4 mol L-1s-1
31%
4 x 10-4 mol L-1s-1
25%
610-4 mol L-1s-1
5%
1 x 10-4 mol L-1s-1
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What is the pressure 300 m below the surface of the ocean if the sp. gravity of sea water is 2.08 : [Atmospheric pressure=1.013 x 105N/ m²].
Anonymous Quiz
24%
73.5 x 105 N/m²
49%
62.1x 105 N/m²
20%
61.5 x 105 N/m²
7%
53.5 x 105 N/m²
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