जाँच के बाद इलाज शुरू होगा।

जाँच means examination, check-up, test, or investigation, depending on context.

In a medical sentence like this, it often means:

• a medical examination
• a test
• a check-up

So जाँच के बाद means after the examination / after the test.

Because बाद is used with the postposition pattern X के बाद, meaning after X.

So:

• जाँच के बाद = after the examination
• खाने के बाद = after eating / after the meal
• काम के बाद = after work

Even though जाँच is feminine, Hindi still uses के बाद, not की बाद.

This is because के बाद works as a fixed postpositional expression. The के here is part of the structure, not a simple English-style possessive.

That is a very common learner question.

Normally, nouns can take:

• का
• की
• के

depending on gender, number, and what follows.

But in expressions like के बाद, के पहले, के लिए, के साथ, the form is often determined by the postposition pattern, not by a direct word-for-word gender match the way English speakers may expect.

So you should learn के बाद as a chunk:

• उसके बाद = after that
• जाँच के बाद = after the examination
• कक्षा के बाद = after class

इलाज means treatment.

It is commonly used for:

• medical treatment
• care for an illness
• a course of treatment

It is a very common word in everyday Hindi, especially in medical contexts.

A slightly more formal or Sanskrit-based word is उपचार, but इलाज is extremely natural and common.

शुरू होगा literally means will start or will begin.

It is made of:

• शुरू = started / begun / beginning
• होगा = will be

Together, in natural English, it means:

• will begin
• will start

This is a very common Hindi way to form the future with adjectives or verbal adjectives plus forms of होना.

होगा is the masculine singular future form of होना.

It agrees with इलाज, which is treated as masculine singular.

So:

• इलाज शुरू होगा = treatment will begin

Compare:

• क्लास शुरू होगी = the class will begin
  because क्लास is often treated as feminine
• काम शुरू होगा = the work will begin
  because काम is masculine

Because इलाज is not the doer here.

शुरू करना means to start something

• डॉक्टर इलाज शुरू करेगा = the doctor will start the treatment

But in your sentence, the treatment itself is what begins, so Hindi uses the intransitive idea:

• इलाज शुरू होगा = the treatment will begin

So the difference is:

• डॉक्टर इलाज शुरू करेगा
  = The doctor will start the treatment.

• इलाज शुरू होगा
  = The treatment will begin.

Hindi normally does not use articles like the or a/an.

So nouns like:

• जाँच
• इलाज

can mean:

• the examination / an examination
• the treatment / treatment

The exact meaning comes from context.

That is why a short Hindi sentence can sound more general or flexible than the English version.

Yes, this is normal Hindi word order.

Hindi usually prefers Subject/Object + other information + Verb.

So:

• जाँच के बाद = after the examination
• इलाज = treatment
• शुरू होगा = will begin

Literal order:

• After the examination, treatment will begin.

This verb-final pattern is one of the biggest differences from English.

Yes. That is correct and more formal.

Compare:

• जाँच के बाद इलाज शुरू होगा = normal, common, everyday
• जाँच के पश्चात इलाज शुरू होगा = more formal, official, or written

Both are correct. In ordinary conversation, के बाद is much more common.

The sentence does not say who starts it, and that is completely normal in Hindi.

The focus is on when treatment begins, not on the person responsible.

Hindi often leaves out the agent when:

• it is obvious
• it is unimportant
• the speaker wants a more general or impersonal statement

So this sentence is like:

• Treatment will begin after the examination rather than
• The doctor will begin the treatment after the examination

जाँच is pronounced approximately like jaanch, but with a nasalized long aa sound.

A rough guide:

• जा = jaa
• the nasal sign adds a nasal quality
• ँच ends like nch/ch

So it sounds roughly like:

• jaanch

But it is not exactly the English janch or jaanch; the vowel is nasalized.

Yes. जाँच is a broad word.

It can mean:

• examination
• inspection
• investigation
• checking
• testing

Examples:

• पुलिस जाँच = police investigation
• खून की जाँच = blood test
• दस्तावेज़ों की जाँच = document inspection

So the exact meaning depends on context. In this sentence, the surrounding medical word इलाज strongly suggests a medical examination or test.