what is the reason behind discrimination of different particles (human & inhuman) in this world?

A) Off-course the whole world has been made of five elements (human and inhuman). The common thing  among the particles is pancha bhutas (5 elements) but we see lot of discrimination, such discrimination is because of the diffrence in the presence of All-mighty that is sannidhana vishesha.
शुद्ध्यशुद्धी विधीयेते समानेष्वपि वस्तुषु ।
द्वव्यस्य विचिकित्सार्थं गुणदोषौ शुभाशुभौ ।। (भागवत)
पञ्चभूतात्मकत्वेन समता सर्ववस्तुषु ।
हरिसन्निधान वैशेष्याद् विशेषश्च महान् सदा ।। (भागवत तात्पर्य निर्णय)

नरसिंहाचार्य सुळिभावि
मठाधिकारि,
गुंटूर, उत्तरादिमठम्
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how japa yagna is greater than normal yagnas?

A) we get 10 times more punyam than normal yagnas by doing japa yagna, the same japa if we do in a whispering voice and avoid loudness we will be getting 100 times more punyam, if we do the same japa mentally in mind(manasika) we get 1000 times more punyam than whispering mode. so practice doing japa in mind only don't utter loudly.
विधि यज्ञात् जपो यज्ञो विशिष्टो दशभिर्गुणैः ।
उपांशु स्यात् शतगुणः साहस्रो मानसः स्मृतः ।। (मनु स्मृति) 
नरसिंहाचार्य सुळिभावि
मठाधिकारि,
गुंटूर, उत्तरादिमठम्
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you can see my prashnottara on uttaradimatham's official website uttaradimath.org in the category adhyatma jignyasa

which is the greatest adharma according to arjuna?

A) According to arjuna Inter-cast marriages are the greatest offence and adharma which will lead our own whole family's demolition along with our great ancestors. Because of the inter-cast marriages, the children born will be chandaalas no vedadhikaara no shraaddhaas no vedic culture and no mental and physical health.
संङ्करो नरकायैव कुलघ्नानां कुलस्य च ।
पतन्ति पितरो ह्येषां लुप्तपिण्डोदक क्रियाः ।।
दोषैरेतैः कुलघ्नानां वर्णसंङ्करकारकैः ।
उत्साद्यन्ते जातिधर्माः कुलधर्माश्च शाश्वताः ।।
उत्सन्न कुल धर्माणां मनुष्याणां जनार्दन ।
नरके नियतं वासो भवतीत्यनुशुश्रुम ।। (भगवद्गीता)
नरसिंहाचार्य सुळिभावि
मठाधिकारि,
गुंटूर, उत्तरादिमठम्
MOB-9493924608 ; 9490312275 visit my blog: HTTP://narasimhacharyasulibhavi.blogspot.com
to join my sms channel send sms as [ON] space [NARASIMHACHARYASULIBHAVI] to mobile number 9870807070
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you can see my prashnottara on uttaradimatham's official website uttaradimath.org in the category adhyatma jignyasa

why bheeshmacharya is so respected in our indian culture?

A) Because of sacrificing all the worldly pleasures for his father shantanu's happiness bheeshmacharya has gained a eternal respect to him in our culture. we should learn from his life story of sacrificing worldly pleasures for our parent's happiness, let not leave all the pleasures of our life, atleast we should obey our parent's regarding our marriage. we should remember all the pains faced by our parents in bringing up our life, don't be so selfish in obtaining worldly pleasures.

नरसिंहाचार्य सुळिभावि
मठाधिकारि,
गुंटूर, उत्तरादिमठम्
MOB-9493924608 ; 9490312275 visit my blog: HTTP://narasimhacharyasulibhavi.blogspot.com
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what is important for brahmin

A) जप्येनैव तु संसिद्ध्येत् ब्राह्मणो नात्र संशयः ।
     कुर्याद् अन्यन्नवा कुर्यात् मैत्रो ब्राह्मण उच्यते ।। (मनु स्मृति)
only with japa yagna complete sanctification is possible for brahmin. especially a brahmin what ever he may do or may not do but compulsorily he should do sandhyavandana to be as a brahmin.
नरसिंहाचार्य सुळिभावि
मठाधिकारि,
गुंटूर, उत्तरादिमठम्
MOB-9493924608 ; 9490312275 visit my blog: HTTP://narasimhacharyasulibhavi.blogspot.com
to join my sms channel send sms as [ON] space [NARASIMHACHARYASULIBHAVI] to mobile number 9870807070
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you can see my prashnottara on uttaradimatham's official website uttaradimath.org in the category adhyatma jignyasa

facing which direction we should have our food?

A) आयुष्यं प्राङ्मुखो भुङ्क्ते यशस्यं दक्षिणामुखः। 
     श्रियं प्रत्यङ्मुखो भुङ्कते ऋतं भुङ्क्ते ह्युदन्मुखः ।। (मनु स्मृति)
If we have our food by facing east direction our life span's longevity will increase, if we face south our honour in the society will increase, if we face west we will have our riches increased, if we face north our intelligence and right knowledge will increase.
नरसिंहाचार्य सुळिभावि
मठाधिकारि,
गुंटूर, उत्तरादिमठम्
MOB-9493924608 ; 9490312275 visit my blog: HTTP://narasimhacharyasulibhavi.blogspot.com
to join my sms channel send sms as [ON] space [NARASIMHACHARYASULIBHAVI] to mobile number 9870807070
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you can see my prashnottara on uttaradimatham's official website uttaradimath.org in the category adhyatma jignyasa

why we should do upasana of vinayaka?

A) Because every word or sound we listen is because of a medium called bhutaakasha where sound can travel (SOUND DOESN'T TRAVEL IN VACCUM) and we will be able to hear the sounds, Lord vinayaka is bhutaakasha abhimani devata means he controls the whole medium named bhutakasha, so with his anugraha only we are able to listen all the words and sounds which are very important for our existence. hence we should be always grateful to Lord vinayaka for all the sounds, music and words we listen.
HAPPY VINAYAKA CHAVATI
नरसिंहाचार्य सुळिभावि
मठाधिकारि,
गुंटूर, उत्तरादिमठम्
MOB-9493924608 ; 9490312275 visit my blog: HTTP://narasimhacharyasulibhavi.blogspot.com
to join my sms channel send sms as [ON] space [NARASIMHACHARYASULIBHAVI] to mobile number 9870807070
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you can see my prashnottara on uttaradimatham's official website uttaradimath.org in the category adhyatma jignyasa