CUET 2024 | English Language | Active & Passive / Narration in One Video...
https://youtube.com/live/UXYo2eyo4Vw?si=o11CgPCyEtBs4v5B
https://youtube.com/live/UXYo2eyo4Vw?si=o11CgPCyEtBs4v5B
YouTube
CUET 2024 | English Language | Active & Passive / Narration in One Video 🔥🔥 | 30 Marks पक्के 🤩🤩
🔴 AIM 𝗖𝗨𝗘𝗧 𝟮𝟬𝟮𝟰 𝗦𝗰𝗶𝗲𝗻𝗰𝗲 𝗗𝗼𝗺𝗮𝗶𝗻 Batch : https://dl.adda247.com/nDsA
🔴AIM PLUS Batch for 𝗖𝗨𝗘𝗧 𝟮𝟬𝟮𝟰 Science Domain :- https://dl.adda247.com/8Gy2
🔴 जुनून 2.0 for 𝗖𝗨𝗘𝗧 𝟮𝟬𝟮𝟰 GT + Language :- https://dl.adda247.com/Hrgv
🔴 जुनून 2.0 for 𝗖𝗨𝗘𝗧 𝟮𝟬𝟮𝟰 𝗔𝗿𝘁𝘀 𝗗𝗼𝗺𝗮𝗶𝗻…
🔴AIM PLUS Batch for 𝗖𝗨𝗘𝗧 𝟮𝟬𝟮𝟰 Science Domain :- https://dl.adda247.com/8Gy2
🔴 जुनून 2.0 for 𝗖𝗨𝗘𝗧 𝟮𝟬𝟮𝟰 GT + Language :- https://dl.adda247.com/Hrgv
🔴 जुनून 2.0 for 𝗖𝗨𝗘𝗧 𝟮𝟬𝟮𝟰 𝗔𝗿𝘁𝘀 𝗗𝗼𝗺𝗮𝗶𝗻…
❤3👍1
✅General Science Most Important Question Part -1
1. फूलों का रंग कौन सी गैस उड़ा देती है
- क्लोरीन
2. कृत्रिम वर्षा के लिए प्रयोग किया जाता है
- सिल्वर आयोडाइड
3. पेंसिल का लेड किसका बना होता है
- ग्रेफाइट
4. आतिशबाजी में नीला रंग किस कारण होता है
- तांबा
5. आतिशबाजी में पीला रंग किस कारण होता है
- सोडियम
6. पाॅलीथीन बनाने में किसका प्रयोग होता है
- इथीलिन
7. Non-Sitck बर्तनों की ऊपरी परत किसकी बनी होती है
- टेफलाॅन
8. मूत्र का पीला रंग किसके कारण होता है
- यूरोक्रोम
9. सोडा वाटर बनाने में किसका प्रयोग होता है
- कार्बन डाइऑक्साइड गैस
10. किस गैस को ' मृदा गैस ' भी कहा जाता है
- जीनाॅन
1. फूलों का रंग कौन सी गैस उड़ा देती है
- क्लोरीन
2. कृत्रिम वर्षा के लिए प्रयोग किया जाता है
- सिल्वर आयोडाइड
3. पेंसिल का लेड किसका बना होता है
- ग्रेफाइट
4. आतिशबाजी में नीला रंग किस कारण होता है
- तांबा
5. आतिशबाजी में पीला रंग किस कारण होता है
- सोडियम
6. पाॅलीथीन बनाने में किसका प्रयोग होता है
- इथीलिन
7. Non-Sitck बर्तनों की ऊपरी परत किसकी बनी होती है
- टेफलाॅन
8. मूत्र का पीला रंग किसके कारण होता है
- यूरोक्रोम
9. सोडा वाटर बनाने में किसका प्रयोग होता है
- कार्बन डाइऑक्साइड गैस
10. किस गैस को ' मृदा गैस ' भी कहा जाता है
- जीनाॅन
👍10🙏2
🚀 CUET Prep Made Easy! 🚀
🤩Flat 30% Off🤩 All Books & Tests
Series.
🔴 Use code 'Cuet30'.
Click Here👇👇
🔴 https://www.adda247.com/cbse-board-class-12th/mock-tests-kit?coursesFacets=CLASS_12
Buy now! 📚
🤩Flat 30% Off🤩 All Books & Tests
Series.
🔴 Use code 'Cuet30'.
Click Here👇👇
🔴 https://www.adda247.com/cbse-board-class-12th/mock-tests-kit?coursesFacets=CLASS_12
Buy now! 📚
❤4👍4🤩1
✅Notes on s-Block Elements:
Physical Properties of Alkali Metals:
➖These are soft in nature and can be cut with the help of knife except the lithium.
➖The atoms of alkali metals have the largest size in their respective periods.
➖The first ionization energy of the alkali metals are the lowest as compared to the elements in the other group.
➖The alkali metals show +1 oxidation state.
➖The alkali metals have low values of reduction potential (as shown in table-I) and therefore have a strong tendency to lose electrons and act as good reducing agents.
➖The melting and boiling points of alkali metals are very low because the intermetallic bonds in them are quite weak.
Hydroxides of Alkali Metals:
a)All the alkali metals, their oxides, peroxides and superoxides readily dissolve in water to produce corresponding hydroxides which are strong alkalies.
➖2Na + 2H2O → 2NaOH + H2
➖Na2O + 2H2O 2NaOH
➖Na2O2 + 2H2O → 2NaOH + H2O2
➖2KO2 + 2H2O → 2KOH + H2O2 + O2
b) The basic strength of these hydroxides increases as we move down the group Li to Cs.
c) All these hydroxides are highly soluble in water and thermally stable except lithium hydroxide.
d) Alkali metals hydroxides being strongly basic react with all acids forming salts.
➖NaOH + HCI → NacI + H2O
➖2NaOH + H2 SO4 → Na2SO4 + 2H2O
Halides of Alkali metals:
➖M2O + 2HX → 2MX + H2O
➖MOH + HX → MX + H2O
➖M2CO3 + 2HX → 2MX + CO2 + H2O (M = Li, Na, K, Rb or Cs)
(X = F, Cl, Br or I)
➖ll the alkali metals form ionic (electrovalent) compounds.
➖The alkali metals are good conductors of heat and electricity.
➖Alkali metals (except Li) exhibit photoelectric effect
➖The alkali metals and their salts impart a characteristic colour to flame.
Physical Properties of Alkali Metals:
➖These are soft in nature and can be cut with the help of knife except the lithium.
➖The atoms of alkali metals have the largest size in their respective periods.
➖The first ionization energy of the alkali metals are the lowest as compared to the elements in the other group.
➖The alkali metals show +1 oxidation state.
➖The alkali metals have low values of reduction potential (as shown in table-I) and therefore have a strong tendency to lose electrons and act as good reducing agents.
➖The melting and boiling points of alkali metals are very low because the intermetallic bonds in them are quite weak.
Hydroxides of Alkali Metals:
a)All the alkali metals, their oxides, peroxides and superoxides readily dissolve in water to produce corresponding hydroxides which are strong alkalies.
➖2Na + 2H2O → 2NaOH + H2
➖Na2O + 2H2O 2NaOH
➖Na2O2 + 2H2O → 2NaOH + H2O2
➖2KO2 + 2H2O → 2KOH + H2O2 + O2
b) The basic strength of these hydroxides increases as we move down the group Li to Cs.
c) All these hydroxides are highly soluble in water and thermally stable except lithium hydroxide.
d) Alkali metals hydroxides being strongly basic react with all acids forming salts.
➖NaOH + HCI → NacI + H2O
➖2NaOH + H2 SO4 → Na2SO4 + 2H2O
Halides of Alkali metals:
➖M2O + 2HX → 2MX + H2O
➖MOH + HX → MX + H2O
➖M2CO3 + 2HX → 2MX + CO2 + H2O (M = Li, Na, K, Rb or Cs)
(X = F, Cl, Br or I)
➖ll the alkali metals form ionic (electrovalent) compounds.
➖The alkali metals are good conductors of heat and electricity.
➖Alkali metals (except Li) exhibit photoelectric effect
➖The alkali metals and their salts impart a characteristic colour to flame.
👍10