क्या आप नकद लेंगी?

At the beginning of a sentence, क्या usually marks it as a yes/no question.

So:

• आप नकद लेंगी। = You will take cash.
• क्या आप नकद लेंगी? = Will you take cash?

In this use, क्या does not mean what.
It is just a question marker.

आप is the polite/formal word for you in Hindi.

Hindi has different levels of you:

• तू = very intimate / very informal
• तुम = familiar / less formal
• आप = polite / respectful

In a customer-service situation, shop conversation, or any respectful context, आप is the natural choice.

नकद means cash.

It is correct and fairly standard, especially in formal or business-like contexts.
In everyday speech, many speakers also say:

• कैश = cash

So you may hear both:

• क्या आप नकद लेंगी?
• क्या आप कैश लेंगी?

Both are understandable, though कैश is very common in modern spoken Hindi.

लेंगी comes from the verb लेना, which means to take.

Here, लेंगी is a future-form meaning roughly will take.

So the structure is:

• लेना = to take
• लेंगी = will take

In this sentence, it agrees with a female person being addressed politely.

Because लेंगी is used when the person being addressed is female.

With आप, future verb forms usually show the gender of the person you are speaking to:

• क्या आप नकद लेंगे? = said to a man / men / mixed group
• क्या आप नकद लेंगी? = said to a woman

So even though आप is polite and can refer to one person or more than one person, the verb still often reflects gender/number in this way.

This is a very common learner question.

With आप, Hindi often uses verb forms that historically behave like plural/polite forms, but in actual usage the future forms still often show gender:

• आप आएँगे = you (male / polite) will come
• आप आएँगी = you (female / polite) will come

So the important thing to remember is:
with आप, Hindi remains respectful, but the verb can still show whether the person addressed is male or female.

It is grammatical, but whether it sounds natural depends on context.

If someone is asking Will you pay in cash?, speakers often say things like:

• क्या आप नकद देंगी? = Will you give cash?
• क्या आप नकद भुगतान करेंगी? = Will you pay in cash? (more formal)
• आप कैश देंगी? = Will you pay cash? (more conversational)

लेंगी literally means will take, so क्या आप नकद लेंगी? sounds more like Will you take cash? For example, it could be said to a cashier or vendor, asking whether they accept cash.

So the sentence is natural if the intended meaning is Will you take/accept cash?

Yes. In Hindi, लेना often covers both take and accept/receive, depending on context.

For example:

• यह लो = take this
• क्या आप कार्ड लेंगे? = will you take/accept card?
• मैं यह नौकरी नहीं लूँगा = I won’t take/accept this job

So in a money/payment context, लेना can naturally mean accept.

The word order is:

• क्या = question marker
• आप = you
• नकद = cash
• लेंगी = will take

So literally it is something like:

Question-marker + you + cash + will-take?

Hindi often puts the main verb near the end of the sentence.
That is very normal.

Here are some common variations:

To a woman politely

• क्या आप नकद लेंगी?

To a man politely

• क्या आप नकद लेंगे?

To a female friend / familiar you

• क्या तुम नकद लोगी?

To a male friend / familiar you

• क्या तुम नकद लोगे?

To multiple people politely

• क्या आप नकद लेंगे?

So the verb changes depending on politeness, gender, and sometimes number.

लेंगी is pronounced roughly like leng-ee, but with a nasalized vowel in the first syllable.

Breakdown:

• ले = le
• ं = nasalization
• गी = gī

So it sounds approximately like:

• lẽ-gī

The dot above, ं, here signals nasalization of the vowel.
A learner does not need perfect nasalization immediately, but it is good to notice it.

Yes, sometimes.

Hindi can form a question through intonation alone, especially in speech:

• आप नकद लेंगी?

This can still mean Will you take cash?

But adding क्या makes the yes/no question clearer and is very common, especially for learners and in careful speech.

To say Won’t you take cash? or You won’t take cash?, you could say:

• क्या आप नकद नहीं लेंगी?

Structure:

• क्या = question marker
• आप = you
• नकद = cash
• नहीं = not
• लेंगी = will take

So नहीं goes before the verb.

Formally, लेंगी is a future form, but in real conversation Hindi often uses future forms for immediate decisions or polite transactional questions.

So depending on context, it may mean:

• Will you take cash?
• Would you take cash?
• Do you accept cash? (contextually)

This is common in service encounters, offers, and polite questions.