स्वाध्याय प्रश्नोत्तरे इ 7 वी सामान्य विज्ञान 3. नैसर्गिक संसाधनाचे गुणधर्म

800 Comments / सेतू अभ्यास / By
4/5 - (1 vote)

नैसर्गिक संसाधनाचे गुणधर्म

(1) हवेची वाफ धरण्याची क्षमता हवेच्या आर्द्रतेवर अवलंबून असते.

(२) पाण्याला स्वतःचा आकार नसतो, पण त्याची निश्चित घनता आणि वस्तुमान असते.

(3) जसे पाणी गोठते, त्याचे प्रमाण वाढते

(4) उदास मातीचा पीएच 7 असतो.

(5) वातावरणाचा दाब सर्व दिशांना समान आहे

(6) हवेच्या दाबातील फरकामुळे वाहणारे वारे वाहतात.

प्रश्न पुढील विधान चुकीचे लिहा. चुकीची विधाने दुरुस्त करा आणि पुन्हा लिहा:

(1) वालुकामय जमिनीची पाणी धारण क्षमता कमी आहे.

ते बरोबर आहे

(२) समुद्री पाणी हे विद्युत वाहक आहे.

चूक – समुद्री पाण्यात चालकता असते.

(3) ज्या पदार्थात विद्राव्य विरघळते त्याला विलायक म्हणतात.

ते बरोबर आहे

(4) हवेमुळे पडणाऱ्या दाबाला वातावरणाचा दाब म्हणतात.

ते बरोबर आहे

(5) समुद्रसपाटीवरील वातावरणाचा दाब सुमारे 101400 न्यूटन प्रति चौरस मीटर आहे.

ते बरोबर आहे

जोड्या जुळवा

1] उत्तरे

(1) हवा – प्रकाशाचे विकिरण

(2) पाणी – उत्सर्जन क्रिया

(3) मातीचा आकार

2] उत्तरे

(1) अम्लीय माती – पीएच 6.5 पेक्षा कमी

(2) उदास माती – पीएच 6.5 ते 7.5

(3) अम्लीय माती- 7.5 पेक्षा जास्त पीएच

काय होईल ते सांगा

Also Read  deputy education officer promotion list:विस्तार अधिकारी शिक्षण वर्ग 3 श्रेणी 2 यांची उपशिक्षणाधिकारी पदावर पदोन्नती साठी तात्पुरती सेवाजेष्ठता यादी प्रसिद्ध

प्रश्न -1] हवेतील हवेचे प्रमाण वाढले.

उत्तर: हवेतील बाष्पाचे प्रमाण जसजसे वाढेल तसतसे वातावरणातील आर्द्रता वाढेल. अशी हवा दमट वाटते.

(२) मातीमध्ये एकसंध एकच पीक.

उत्तर: मातीमध्ये सतत एकच पीक घेतले तर जमिनीतील पोषक घटकांचे प्रमाण कमी होईल. कापणी दरम्यान रासायनिक खतांचा जास्त वापर केल्यास जमिनीचा पोत बिघडेल. जमीन लागवडीयोग्य राहणार नाही. पीक नीट येणार नाही.

(3) रिकाम्या बाटलीला बूच न करता उलट्या केल्या आणि पाण्याच्या पसरलेल्या भांड्यात तिरपा केला.

उत्तर: बाटलीतून बाहेर पडलेली हवा बुडबुड्यांच्या स्वरूपात बाहेर येते.

(4) प्रकाश किरण हवेत लहान कणांवर पडतात.

उत्तर: हवेतील लहान कण प्रकाशाचे किरणोत्सर्ग करतात. त्यामुळे प्रकाश किरण सर्व दिशांना विखुरतात

(1) 1726 मध्ये डॅनियल बानोली यांनी मांडलेली महत्त्वाची तत्त्वे कोणती आहेत?

उत्तर: 1726 मध्ये डॅनियल बानोली यांनी मांडलेली महत्त्वाची तत्त्वे:

(1) हवेचा वेग वाढल्याने त्याचा दाब कमी होतो. (२) वाऱ्याचा वेग कमी झाला. त्यामुळे दबाव वाढतो. (३) जर एखादी वस्तू हवेतून फिरत असेल तर हवेचा दाब त्या वस्तूच्या गतीच्या लंब दिशेने कमी होतो. त्यामुळे वस्तूच्या सभोवतालची हवा उच्च दाबापासून कमी दाबाकडे वाहू लागते.

(२) हवा प्रकाशाचा प्रसार कसा करते?

उत्तर: (१) सर्व दिशांना प्रकाश किरणांचे विखुरणे म्हणजे प्रकाशाचे विकिरण. (२) हवेमध्ये काही वायूंचे मिश्रण तसेच धूळ, पूर आणि वाष्पांचे सूक्ष्म कण असतात. (3) जेव्हा सूर्याची किरणे हवेत या लहान कणांवर पडतात तेव्हा हा प्रकाश सर्व दिशांना विखुरलेला असतो. अशाप्रकारे प्रकाश पसरतो.

Also Read  इयत्ता तिसरी मासिक नियोजन

(3) ध्वनी प्रसारणात हवेचे महत्त्व काय आहे?

उत्तर: (1) ध्वनी प्रसारित करण्यासाठी माध्यम म्हणून हवा आवश्यक आहे. (२) आपण ऐकत असलेले सर्व आवाज केवळ आपल्या सभोवतालच्या हवेमुळे ऐकू येतात. (3) ते हवेद्वारे आपल्यापर्यंत पोहोचतात. (4) जर हवेचे माध्यम नसेल तर तुम्ही ऐकू शकत नाही. तर ध्वनी प्रसारणासाठी हवा ही गुरुकिल्ली आहे.

(4) बर्फ पाण्यावर तरंगताना का दिसतो?

उत्तर त्यावेळी पाण्याचे प्रमाण वाढते आणि घनता कमी होते. जेव्हा ठोस बर्फ तयार होतो, तेव्हा मूळ ट्राउट पाण्यापेक्षा हलका असतो. बर्फ पाण्यापेक्षा हलका असल्याने म्हशीचे खडक पाण्यावर तरंगतात.

(5) पाण्याने भरलेली काचेची बाटली कधीही फ्रीजरमध्ये का ठेवू नये?

उत्तर: (१) जेव्हा बर्फ तयार होतो, तेव्हा तो पाण्यातील विसंगत वर्तनाप्रमाणे पसरतो. (2) तापमान 4 C च्या खाली जात असताना, पाण्याची घनता कमी होते आणि प्रमाण वाढते. (3) फ्रीजरमध्ये तापमान 4 C च्या खाली असल्याने पाणी पसरू शकते आणि बाटली फुटू शकते. (4) काचेची बाटली असल्याने तुटलेली काच इजा करेल. त्यामुळे फ्रीझरमध्ये कधीही पाण्याने भरलेली काचेची बाटली ठेवू नका.

Also Read  सेतू अभ्यास (Bridge course)२०२३- २४

(6) पाण्याचे विविध गुणधर्म स्पष्ट करा.

उत्तर: पाण्यामध्ये खालील गुणधर्म आहेत

(1) प्रवाहीता: पाण्यात प्रवाहीता असल्याने ती जलवाहतुकीसाठी उपयुक्त आहे. उंचीवरून पडणाऱ्या पाण्याचा प्रवाह जनरेटरच्या मदतीने वीजनिर्मितीसाठी वापरला जातो.

(2) उत्कृष्ट शीतलक: गरम वाहनांच्या रेडिएटर्सचे तापमान नियंत्रित करण्यासाठी पाण्याचा वापर केला जातो.

(3) सार्वत्रिक विलायक: अनेक पदार्थ पाण्यात विरघळतात. म्हणूनच त्याला जागतिक विलायक म्हणतात. पाणी अनेक ठिकाणी विलायक म्हणून वापरले जाते. उदा., कारखाने, प्रयोगशाळा, अन्न शिजवणे.

(4) अनेक जैविक प्रक्रिया ज्या शरीरात घडतात. उदाहरणार्थ, पाचन, विसर्जन इत्यादी पाण्यामुळे शक्य झाले आहेत.

(5) साफसफाई: आपल्या जीवनातील दैनंदिन कामे पाण्याच्या मदतीने केली जातात. पाणी आंघोळ, कपडे धुणे, भांडी स्वच्छ करणे इत्यादीसाठी स्वच्छ करणारे म्हणून वापरले जाते.

(7) समुद्राच्या पाण्याची घनता पावसाच्या पाण्यापेक्षा जास्त का आहे?

उत्तर: समुद्राच्या पाण्यात भरपूर क्षार असतात. त्यामुळे त्या पाण्याची घनता जास्त असते.

(4) चांगल्या मातीच्या संरचनेचे महत्त्व काय आहे?

उत्तर: (१) मातीची सुपीकता जमिनीच्या रचनेवर अवलंबून असते. चांगल्या मातीच्या संरचनेमुळे मुळांना पुरेसा ऑक्सिजन पुरवठा होतो. (2) पाण्याचा चांगला निचरा

800 thoughts on “स्वाध्याय प्रश्नोत्तरे इ 7 वी सामान्य विज्ञान 3. नैसर्गिक संसाधनाचे गुणधर्म”

  1. Pro Nail Complex

    Hi there I am so delighted I found your website, I really found you
    by error, while I was looking on Digg for something else, Regardless I am
    here now and would just like to say thanks a lot for a tremendous post and a all round exciting
    blog (I also love the theme/design), I don’t have time to read
    through it all at the moment but I have saved it and also added in your
    RSS feeds, so when I have time I will be back to read a lot more, Please do keep up the superb job.

    Reply
  2. làm bảng hiệu

    I do not even understand how I finished up here, but I thought this put up was good.

    I do not know who you might be however certainly you are going to a well-known blogger in case you are not already.
    Cheers!

    Reply
  9. satchel bag lv

    We absolutely love your blog and find many of your post’s to be just
    what I’m looking for. can you offer guest writers to write content for you personally?
    I wouldn’t mind composing a post or elaborating on a lot of the subjects you write related to here.
    Again, awesome site!

    Reply
  34. Asbestos Case

    Mesothelioma is a lethal type of cancer that is caused
    almost exclusively through exposure to Asbestos Case.
    A New York mesothelioma attorney can assist victims and their families hold the companies responsible for concealing this deadly substance.

    Reply
  126. Andrea

    Smart Aluminium Tilt And Turn Windows Tools To Help You Manage
    Your Daily Life Smart Aluminium Tilt And Turn Windows Trick Every Individual Should Know
    smart aluminium tilt and turn windows, Andrea,

    Reply
  683. fake comment

    What’s Going down i am new to this, I stumbled upon this
    I’ve found It positively helpful and it has aided me out loads.
    I am hoping to contribute & aid different customers like its helped me.

    Good job.

    Reply
  684. Foster Plumbing & Heating

    Hey! I know this is kinda off topic but I was wondering which blog platform are you using for this website?
    I’m getting fed up of WordPress because I’ve had problems with hackers and I’m looking at options
    for another platform. I would be great if you could point me in the direction of
    a good platform.

    Reply
  723. Alejandro

    Woah! I’m really digging the template/theme of this blog.
    It’s simple, yet effective. A lot of times it’s tough to get that “perfect balance” between superb usability and appearance.
    I must say you have done a very good job with this. Also, the blog loads super fast
    for me on Safari. Outstanding Blog!

    Reply
  732. SITUS PENIPU

    It’s in point of fact a great and helpful piece of info.

    I am satisfied that you just shared this helpful info with us.

    Please stay us informed like this. Thanks for sharing.

    Reply
  735. Evan

    Hey! I just wanted to ask if you ever have any trouble with hackers?

    My last blog (wordpress) was hacked and I ended
    up losing a few months of hard work due to no back
    up. Do you have any solutions to protect against hackers?

    Reply
  736. Jesenia

    A person necessarily assist to make severely articles I’d state.
    That is the very first time I frequented your website page and up to now?
    I amazed with the analysis you made to make this actual publish incredible.
    Excellent activity!

    Reply
  739. Michaela

    Admiring the time and effort you put into your website and in depth
    information you offer. It’s nice to come across a blog
    every once in a while that isn’t the same outdated rehashed material.
    Fantastic read! I’ve saved your site and I’m adding
    your RSS feeds to my Google account.

    Reply
  742. Harvey

    Hi! Do you know if they make any plugins to safeguard against hackers?
    I’m kinda paranoid about losing everything I’ve worked
    hard on. Any suggestions?

    Reply
  746. Devon

    It’s really very complicated in this full of activity life to listen news on TV, therefore I
    just use web for that reason, and obtain the most up-to-date
    information.

    Reply
  747. Jamey

    Hi there! This post couldn’t be written any better!

    Reading this post reminds me of my old room mate! He
    always kept talking about this. I will forward this write-up to him.
    Pretty sure he will have a good read. Thank you for sharing!

    Reply
  748. Paige

    Hello there, You’ve done an incredible job. I’ll certainly digg it and personally suggest to
    my friends. I’m sure they will be benefited from this site.

    Reply
  749. Penelope

    I got this web page from my pal who told me on the topic of this site and at the moment this time I am browsing this website and reading
    very informative articles or reviews at this place.

    Reply
  750. Aimee

    Thanks for any other great article. The place else may just anyone get
    that type of info in such a perfect manner of writing?
    I have a presentation subsequent week, and
    I am on the look for such info.

    Reply
  751. Ellis

    continuously i used to read smaller articles which as well clear their motive, and that
    is also happening with this article which I am reading now.

    Reply
  752. Jody

    Hi, I do think this is an excellent website. I stumbledupon it 😉 I may revisit once again since i
    have book marked it. Money and freedom is the greatest way to change, may you be rich and continue to guide other people.

    Reply
  753. Ryder

    Thank you for every other wonderful article.
    The place else may anybody get that type of
    info in such a perfect approach of writing?
    I have a presentation next week, and I’m at the search for such
    info.

    Reply
  757. Tamera

    Good day! I know this is kind of off topic but I was wondering if you knew where I could locate a captcha plugin for my comment
    form? I’m using the same blog platform as yours and I’m having difficulty finding one?

    Thanks a lot!

    Reply
  758. Courtney

    Thanks for the auspicious writeup. It in reality used to be a amusement
    account it. Look complex to far introduced agreeable from you!
    However, how could we keep in touch?

    Reply
  759. Christina

    Its such as you learn my mind! You seem to understand a lot about this, like you
    wrote the e book in it or something. I believe that you could do with some % to pressure the message house a
    bit, however instead of that, that is magnificent blog.

    An excellent read. I will certainly be back.

    Reply
  760. Chu

    Excellent blog here! Also your web site loads up very fast!
    What host are you using? Can I get your affiliate link to your host?
    I wish my web site loaded up as quickly as yours lol

    Reply
  762. Tera

    Hello this is kind of of off topic but I was wanting to know
    if blogs use WYSIWYG editors or if you have to manually code with HTML.

    I’m starting a blog soon but have no coding skills so I wanted to get
    guidance from someone with experience. Any help would be greatly appreciated!

    Reply
  763. Camilla

    Heya i am for the first time here. I found this board and I find It truly useful & it helped me out much.

    I hope to give something back and aid others like you helped
    me.

    Reply
  765. Vida

    I’m curious to find out what blog platform you have
    been using? I’m having some minor security issues with my latest blog and I would like to find something
    more safeguarded. Do you have any recommendations?

    Reply
  766. Jody

    Hello my friend! I wish to say that this post is awesome, nice written and include approximately all vital
    infos. I would like to see more posts like this .

    Reply
  769. Rocky

    I have been browsing online more than 3 hours today, yet I never found any interesting article like yours.
    It’s pretty worth enough for me. Personally, if all web owners
    and bloggers made good content as you did, the web will be much
    more useful than ever before.

    Reply
  771. Angel

    Hi there! This post couldn’t be written any better! Reading
    this post reminds me of my good old room mate!

    He always kept talking about this. I will forward this page to
    him. Fairly certain he will have a good read. Thank you for sharing!

    Reply
  772. Brigida

    Thank you for the good writeup. It in fact was a amusement account
    it. Look advanced to far added agreeable from you!
    However, how could we communicate?

    Reply
  773. Ludie

    Hey would you mind letting me know which hosting company you’re using?
    I’ve loaded your blog in 3 completely different
    browsers and I must say this blog loads a lot faster then most.
    Can you recommend a good hosting provider at a fair price?
    Thanks, I appreciate it!

    Reply
  774. Donnell

    Hey there! I simply wish to give you a big thumbs up for the excellent
    information you have here on this post. I am returning to your web site
    for more soon.

    Reply
  775. Tobias

    I was suggested this web site by my cousin. I am not sure whether
    this post is written by him as no one else know such detailed about my
    problem. You are amazing! Thanks!

    Reply
  778. Robyn

    Write more, thats all I have to say. Literally, it seems as though you relied on the video to make
    your point. You definitely know what youre talking about,
    why throw away your intelligence on just posting videos to your
    weblog when you could be giving us something informative to read?

    Reply
  780. Ruben

    Howdy excellent blog! Does running a blog like this take a great
    deal of work? I’ve very little knowledge of coding however I was hoping to start my own blog in the near future.
    Anyhow, if you have any suggestions or tips for new blog owners please share.
    I understand this is off subject nevertheless I just had to ask.
    Many thanks!

    Reply
  781. Larae

    Howdy! This post could not be written any better!
    Looking through this article reminds me of my previous roommate!
    He constantly kept preaching about this. I will send this information to him.
    Fairly certain he’ll have a very good read. Thanks for sharing!

    Reply
  782. Judi

    I loved as much as you’ll receive carried out right here.

    The sketch is tasteful, your authored material
    stylish. nonetheless, you command get bought an shakiness
    over that you wish be delivering the following. unwell unquestionably come more formerly again since exactly the same nearly very often inside case you shield
    this increase.

    Reply
  784. Betty

    That is a really good tip particularly to those new to the blogosphere.
    Simple but very accurate information… Many thanks for
    sharing this one. A must read article!

    Reply
  785. Adan

    Hey there, You have done a fantastic job. I’ll definitely digg it and personally recommend to my
    friends. I am sure they will be benefited from this web site.

    Reply
  788. Thorsten

    After looking into a handful of the articles on your web page, I truly appreciate your technique of writing a blog.
    I saved as a favorite it to my bookmark website list and will be checking back in the near future.
    Please visit my website as well and let me know what
    you think.

    Reply
  789. Cary

    Hello There. I discovered your weblog the use of msn. That is a
    really well written article. I’ll be sure to bookmark it
    and come back to learn more of your helpful information. Thanks for the post.
    I’ll definitely comeback.

    Reply
  790. Lin

    Greetings! I know this is kinda off topic but I was wondering if you knew
    where I could locate a captcha plugin for my comment form?
    I’m using the same blog platform as yours and I’m having problems finding one?
    Thanks a lot!

    Reply
  791. Tammi

    My spouse and I absolutely love your blog and find the majority of your
    post’s to be exactly I’m looking for. Would you offer guest writers to write content
    for yourself? I wouldn’t mind publishing a post or elaborating on a few of the subjects
    you write in relation to here. Again, awesome web site!

    Reply
  792. Margie

    It’s a shame you don’t have a donate button! I’d definitely donate to
    this excellent blog! I suppose for now i’ll settle for book-marking and adding your RSS feed to my Google account.
    I look forward to fresh updates and will talk about this website with my Facebook
    group. Chat soon!

    Reply
  793. Virgie

    My brother suggested I might like this website. He
    was totally right. This post truly made my day. You cann’t imagine just how much time I had spent for this info!
    Thanks!

    Reply
  794. Alissa

    Excellent post. I was checking continuously this blog
    and I am impressed! Very useful info particularly the last part 🙂 I care
    for such information a lot. I was seeking this particular info for a long time.

    Thank you and good luck.

    Reply
  796. Hung

    An impressive share! I have just forwarded this onto a co-worker
    who was conducting a little research on this. And he actually bought me breakfast due to the fact that I stumbled upon it for him…
    lol. So allow me to reword this…. Thanks for the meal!!
    But yeah, thanx for spending the time to discuss this
    subject here on your web page.

    Reply
  797. Lucinda

    Simply wish to say your article is as amazing. The clarity
    in your post is just spectacular and i can assume you’re an expert on this subject.
    Well with your permission let me to grab your feed to keep up to date with forthcoming post.
    Thanks a million and please carry on the rewarding work.

    Reply
  800. Adrianna

    Hey just wanted to give you a quick heads up and let you know a few of the images aren’t loading correctly.
    I’m not sure why but I think its a linking issue. I’ve tried it in two different internet browsers and
    both show the same results.

    Reply

Leave a Comment

Your email address will not be published. Required fields are marked *

error: Content is protected !!
MENU
WhatsApp वर Delete केलेले मेसेज कसे पाहायचे ?