मुझे इस खबर पर शक है।

Because Hindi often uses a different structure for feelings, perceptions, and mental states.

In English, you say I doubt this news.

In Hindi, the idea is often expressed more like:

• to me
  • about this news
    • doubt exists

So मुझे is the dative/oblique form meaning to me.

This pattern is very common in Hindi:

• मुझे डर है = I am afraid / I have fear
• मुझे याद है = I remember
• मुझे शक है = I have doubt / I suspect

You could think of मुझे here as the natural Hindi way to mark the person experiencing the doubt.

Also, मुझे and मुझको are often interchangeable:

• मुझे इस खबर पर शक है
• मुझको इस खबर पर शक है

Both are natural.

Because यह changes to इस before a postposition.

Hindi demonstratives have a direct form and an oblique form.

For this, the forms are:

• यह = direct
• इस = oblique

Since खबर is followed by the postposition पर, the whole noun phrase must be in the oblique form:

• यह खबर = this news
• इस खबर पर = on/about this news

More examples:

• यह किताब = this book
• इस किताब में = in this book
• यह आदमी = this man
• इस आदमी पर = on/about this man

So इस is required here because of पर.

Literally, पर often means on, but here it means something more like about, regarding, or concerning.

In sentences with शक, Hindi often uses पर to mark the thing or person that is the target of suspicion/doubt:

• मुझे उस आदमी पर शक है = I suspect that man / I have doubts about that man
• मुझे इस बात पर शक है = I doubt this matter / I have doubts about this point
• मुझे इस खबर पर शक है = I doubt this news

So in this sentence, पर is part of a natural Hindi pattern, not a literal spatial on.

शक is a noun meaning doubt, suspicion, or mistrust.

So शक है literally means there is doubt or there is suspicion.

That is why है appears: it is the verb to be in the present tense, agreeing with the idea that doubt exists.

A very literal breakdown would be:

• मुझे = to me
• इस खबर पर = about this news
• शक = doubt/suspicion
• है = is

So the whole sentence is structurally something like:

To me, there is doubt about this news.

This is why Hindi does not use something like मैं शक करता हूँ here. That would be less natural for this meaning.

It can be both, depending on context, but शक often has a slightly stronger, more suspicious feel than plain English doubt.

So this sentence may suggest:

• I doubt this news
• I am suspicious about this news
• I don’t trust this news fully

For example:

• मुझे उसकी बात पर शक है = I doubt what he said / I’m suspicious about his statement
• मुझे उस आदमी पर शक है = I suspect that man

If you want a more formal or neutral word for doubt, Hindi also has संदेह.

The given order is very natural, but Hindi word order is somewhat flexible.

The standard sentence:

• मुझे इस खबर पर शक है।

You could also say:

• इस खबर पर मुझे शक है।

This version puts a little more focus on this news.

Both are grammatical and natural. Hindi often places the most important or topical information earlier in the sentence.

Still, for learners, the safest default is:

• मुझे + X पर + शक है

For example:

• मुझे इस आदमी पर शक है।
• मुझे उसकी कहानी पर शक है।

खबर is a very common everyday word for news or report.

Hindi also has:

• समाचार = news, but more formal or bookish
• सूचना = information, notice

So:

• मुझे इस खबर पर शक है sounds natural in everyday speech.
• मुझे इस समाचार पर संदेह है sounds more formal and written.

Both are possible, but खबर is the more conversational choice.

Yes, खबर is feminine.

For example:

• यह खबर सही है। = This news is correct.
• अच्छी खबर = good news

In your sentence, gender does not visibly affect शक है, because शक is the noun controlling that part of the sentence, not खबर.

But gender still matters in other contexts, especially with adjectives and past participles:

• यह खबर झूठी है। = This news is false.
• अच्छी खबर = good news

So yes, खबर is feminine, but that is not the main grammatical issue in this particular sentence.

You may hear forms with शक करना, but in this kind of everyday statement, मुझे ... पर शक है is usually the more natural pattern.

So for learners, this is the best model:

• मुझे इस खबर पर शक है।

The form with करना can sound more deliberate, like to suspect as an action, but it is less common as the basic way to express this feeling.

A useful rule of thumb:

• For a state or feeling: मुझे ... पर शक है
• For a more formal noun-based version: मुझे ... पर संदेह है

Yes.

A more formal version is:

• मुझे इस खबर पर संदेह है।

Here, संदेह is a more formal word for doubt.

Other related expressions are:

• मुझे इस खबर पर भरोसा नहीं है। = I do not trust this news.
• मुझे इस खबर की सच्चाई पर शक है। = I doubt the truth of this news.
• मुझे लगता है कि यह खबर सही नहीं है। = I think this news is not correct.

So शक is common and conversational, while संदेह is more formal.

It is usually pronounced roughly like khabar.

You may see two spellings:

• खबर
• ख़बर

The version with the dot, ख़, represents a sound borrowed from Persian/Arabic, a little different from plain ख. In everyday modern Hindi, many speakers do not strongly distinguish them, and खबर without the dot is extremely common.

So for most learners:

• recognizing both spellings is useful
• saying khabar is fine

The main thing is to know the word and use it naturally in context.